<?php

//////////////////////////////////////////////////////////////
///  phpThumb() by James Heinrich <info@silisoftware.com>   //
//        available at http://phpthumb.sourceforge.net     ///
//////////////////////////////////////////////////////////////
///                                                         //
// See: phpthumb.readme.txt for usage instructions          //
//                                                         ///
//////////////////////////////////////////////////////////////

ob_start();
if (!include_once(dirname(__FILE__) . '/phpthumb.functions.php')) {
    ob_end_flush();
    die('failed to include_once("' . realpath(dirname(__FILE__) . '/phpthumb.functions.php') . '")');
}
ob_end_clean();

class phpthumb {

    // public:
    // START PARAMETERS (for object mode and phpThumb.php)
    // See phpthumb.readme.txt for descriptions of what each of these values are
    var $src = null;     // SouRCe filename
    var $new = null;     // NEW image (phpThumb.php only)
    var $w = null;     // Width
    var $h = null;     // Height
    var $wp = null;     // Width  (Portrait Images Only)
    var $hp = null;     // Height (Portrait Images Only)
    var $wl = null;     // Width  (Landscape Images Only)
    var $hl = null;     // Height (Landscape Images Only)
    var $ws = null;     // Width  (Square Images Only)
    var $hs = null;     // Height (Square Images Only)
    var $f = null;     // output image Format
    var $q = 75;       // jpeg output Quality
    var $sx = null;     // Source crop top-left X position
    var $sy = null;     // Source crop top-left Y position
    var $sw = null;     // Source crop Width
    var $sh = null;     // Source crop Height
    var $zc = null;     // Zoom Crop
    var $bc = null;     // Border Color
    var $bg = null;     // BackGround color
    var $fltr = array();  // FiLTeRs
    var $goto = null;     // GO TO url after processing
    var $err = null;     // default ERRor image filename
    var $xto = null;     // extract eXif Thumbnail Only
    var $ra = null;     // Rotate by Angle
    var $ar = null;     // Auto Rotate
    var $aoe = null;     // Allow Output Enlargement
    var $far = null;     // Fixed Aspect Ratio
    var $iar = null;     // Ignore Aspect Ratio
    var $maxb = null;     // MAXimum Bytes
    var $down = null;     // DOWNload thumbnail filename
    var $md5s = null;     // MD5 hash of Source image
    var $sfn = 0;        // Source Frame Number
    var $dpi = 150;      // Dots Per Inch for vector source formats
    var $sia = null;     // Save Image As filename
    var $file = null;     // >>>deprecated, DO NOT USE, will be removed in future versions<<<
    var $phpThumbDebug = null;
    // END PARAMETERS
    // public:
    // START CONFIGURATION OPTIONS (for object mode only)
    // See phpThumb.config.php for descriptions of what each of these settings do
    // * Directory Configuration
    var $config_cache_directory = null;
    var $config_cache_directory_depth = 0;
    var $config_cache_disable_warning = true;
    var $config_cache_source_enabled = false;
    var $config_cache_source_directory = null;
    var $config_temp_directory = null;
    var $config_document_root = null;
    // * Default output configuration:
    var $config_output_format = 'jpeg';
    var $config_output_maxwidth = 0;
    var $config_output_maxheight = 0;
    var $config_output_interlace = true;
    // * Error message configuration
    var $config_error_image_width = 400;
    var $config_error_image_height = 100;
    var $config_error_message_image_default = '';
    var $config_error_bgcolor = 'CCCCFF';
    var $config_error_textcolor = 'FF0000';
    var $config_error_fontsize = 1;
    var $config_error_die_on_error = false;
    var $config_error_silent_die_on_error = false;
    var $config_error_die_on_source_failure = true;
    // * Anti-Hotlink Configuration:
    var $config_nohotlink_enabled = true;
    var $config_nohotlink_valid_domains = array();
    var $config_nohotlink_erase_image = true;
    var $config_nohotlink_text_message = 'Off-server thumbnailing is not allowed';
    // * Off-server Linking Configuration:
    var $config_nooffsitelink_enabled = false;
    var $config_nooffsitelink_valid_domains = array();
    var $config_nooffsitelink_require_refer = false;
    var $config_nooffsitelink_erase_image = true;
    var $config_nooffsitelink_watermark_src = '';
    var $config_nooffsitelink_text_message = 'Off-server linking is not allowed';
    // * Border & Background default colors
    var $config_border_hexcolor = '000000';
    var $config_background_hexcolor = 'FFFFFF';
    // * TrueType Fonts
    var $config_ttf_directory = './fonts';
    var $config_max_source_pixels = null;
    var $config_use_exif_thumbnail_for_speed = false;
    var $allow_local_http_src = false;
    var $config_imagemagick_path = null;
    var $config_prefer_imagemagick = true;
    var $config_imagemagick_use_thumbnail = true;
    var $config_cache_maxage = null;
    var $config_cache_maxsize = null;
    var $config_cache_maxfiles = null;
    var $config_cache_source_filemtime_ignore_local = false;
    var $config_cache_source_filemtime_ignore_remote = true;
    var $config_cache_default_only_suffix = false;
    var $config_cache_force_passthru = true;
    var $config_cache_prefix = '';    // default value set in the constructor below
    // * MySQL
    var $config_mysql_query = null;
    var $config_mysql_hostname = null;
    var $config_mysql_username = null;
    var $config_mysql_password = null;
    var $config_mysql_database = null;
    // * Security
    var $config_high_security_enabled = false;
    var $config_high_security_password = null;
    var $config_disable_debug = true;
    var $config_allow_src_above_docroot = false;
    var $config_allow_src_above_phpthumb = true;
    // * HTTP fopen
    var $config_http_fopen_timeout = 10;
    var $config_http_follow_redirect = true;
    // * Compatability
    var $config_disable_pathinfo_parsing = false;
    var $config_disable_imagecopyresampled = false;
    var $config_disable_onlycreateable_passthru = false;
    var $config_http_user_agent = 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7';
    // END CONFIGURATION OPTIONS
    // public: error messages (read-only; persistant)
    var $debugmessages = array();
    var $debugtiming = array();
    var $fatalerror = null;
    // private: (should not be modified directly)
    var $thumbnailQuality = 75;
    var $thumbnailFormat = null;
    var $sourceFilename = null;
    var $rawImageData = null;
    var $IMresizedData = null;
    var $outputImageData = null;
    var $useRawIMoutput = false;
    var $gdimg_output = null;
    var $gdimg_source = null;
    var $getimagesizeinfo = null;
    var $source_width = null;
    var $source_height = null;
    var $thumbnailCropX = null;
    var $thumbnailCropY = null;
    var $thumbnailCropW = null;
    var $thumbnailCropH = null;
    var $exif_thumbnail_width = null;
    var $exif_thumbnail_height = null;
    var $exif_thumbnail_type = null;
    var $exif_thumbnail_data = null;
    var $exif_raw_data = null;
    var $thumbnail_width = null;
    var $thumbnail_height = null;
    var $thumbnail_image_width = null;
    var $thumbnail_image_height = null;
    var $tempFilesToDelete = array();
    var $cache_filename = null;
    var $AlphaCapableFormats = array('png', 'ico', 'gif');
    var $is_alpha = false;
    var $iswindows = null;
    var $issafemode = null;
    var $phpthumb_version = '1.7.11-201108081537';

    //////////////////////////////////////////////////////////////////////
    // public: constructor
    function phpThumb() {
        $this->DebugTimingMessage('phpThumb() constructor', __FILE__, __LINE__);
        $this->DebugMessage('phpThumb() v' . $this->phpthumb_version, __FILE__, __LINE__);
        $this->config_max_source_pixels = round(max(intval(ini_get('memory_limit')), intval(get_cfg_var('memory_limit'))) * 1048576 * 0.20); // 20% of memory_limit
        $this->iswindows = (bool) (strtoupper(substr(PHP_OS, 0, 3)) == 'WIN');
        $this->issafemode = (bool) preg_match('#(1|ON)#i', ini_get('safe_mode'));
        $this->config_document_root = (!empty($_SERVER['DOCUMENT_ROOT']) ? $_SERVER['DOCUMENT_ROOT'] : $this->config_document_root);
        $this->config_cache_prefix = ( isset($_SERVER['SERVER_NAME']) ? $_SERVER['SERVER_NAME'] . '_' : '');

        $this->purgeTempFiles(); // purge existing temp files if re-initializing object

        $php_sapi_name = strtolower(function_exists('php_sapi_name') ? php_sapi_name() : '');
        if ($php_sapi_name == 'cli') {
            $this->config_allow_src_above_docroot = true;
        }
    }

    function __destruct() {
        $this->purgeTempFiles();
    }

    // public:
    function purgeTempFiles() {
        foreach ($this->tempFilesToDelete as $tempFileToDelete) {
            if (file_exists($tempFileToDelete)) {
                $this->DebugMessage('Deleting temp file "' . $tempFileToDelete . '"', __FILE__, __LINE__);
                @unlink($tempFileToDelete);
            }
        }
        $this->tempFilesToDelete = array();
        return true;
    }

    // public:
    function setSourceFilename($sourceFilename) {
        //$this->resetObject();
        //$this->rawImageData   = null;
        $this->sourceFilename = $sourceFilename;
        $this->src = $sourceFilename;
        if (is_null($this->config_output_format)) {
            $sourceFileExtension = strtolower(substr(strrchr($sourceFilename, '.'), 1));
            if (preg_match('#^[a-z]{3,4}$#', $sourceFileExtension)) {
                $this->config_output_format = $sourceFileExtension;
                $this->DebugMessage('setSourceFilename(' . $sourceFilename . ') set $this->config_output_format to "' . $sourceFileExtension . '"', __FILE__, __LINE__);
            } else {
                $this->DebugMessage('setSourceFilename(' . $sourceFilename . ') did NOT set $this->config_output_format to "' . $sourceFileExtension . '" because it did not seem like an appropriate image format', __FILE__, __LINE__);
            }
        }
        $this->DebugMessage('setSourceFilename(' . $sourceFilename . ') set $this->sourceFilename to "' . $this->sourceFilename . '"', __FILE__, __LINE__);
        return true;
    }

    // public:
    function setSourceData($rawImageData, $sourceFilename='') {
        //$this->resetObject();
        //$this->sourceFilename = null;
        $this->rawImageData = $rawImageData;
        $this->DebugMessage('setSourceData() setting $this->rawImageData (' . strlen($this->rawImageData) . ' bytes; magic="' . substr($this->rawImageData, 0, 4) . '" (' . phpthumb_functions::HexCharDisplay(substr($this->rawImageData, 0, 4)) . '))', __FILE__, __LINE__);
        if ($this->config_cache_source_enabled) {
            $sourceFilename = ($sourceFilename ? $sourceFilename : md5($rawImageData));
            if (!is_dir($this->config_cache_source_directory)) {
                $this->ErrorImage('$this->config_cache_source_directory (' . $this->config_cache_source_directory . ') is not a directory');
            } elseif (!@is_writable($this->config_cache_source_directory)) {
                $this->ErrorImage('$this->config_cache_source_directory (' . $this->config_cache_source_directory . ') is not writable');
            }
            $this->DebugMessage('setSourceData() attempting to save source image to "' . $this->config_cache_source_directory . DIRECTORY_SEPARATOR . urlencode($sourceFilename) . '"', __FILE__, __LINE__);
            if ($fp = @fopen($this->config_cache_source_directory . DIRECTORY_SEPARATOR . urlencode($sourceFilename), 'wb')) {
                fwrite($fp, $rawImageData);
                fclose($fp);
            } elseif (!$this->phpThumbDebug) {
                $this->ErrorImage('setSourceData() failed to write to source cache (' . $this->config_cache_source_directory . DIRECTORY_SEPARATOR . urlencode($sourceFilename) . ')');
            }
        }
        return true;
    }

    // public:
    function setSourceImageResource($gdimg) {
        //$this->resetObject();
        $this->gdimg_source = $gdimg;
        return true;
    }

    // public:
    function setParameter($param, $value) {
        if ($param == 'src') {
            $this->setSourceFilename($this->ResolveFilenameToAbsolute($value));
        } elseif (@is_array($this->$param)) {
            if (is_array($value)) {
                foreach ($value as $arraykey => $arrayvalue) {
                    array_push($this->$param, $arrayvalue);
                }
            } else {
                array_push($this->$param, $value);
            }
        } else {
            $this->$param = $value;
        }
        return true;
    }

    // public:
    function getParameter($param) {
        //if (property_exists('phpThumb', $param)) {
        return $this->$param;
        //}
        //$this->DebugMessage('setParameter() attempting to get non-existant parameter "'.$param.'"', __FILE__, __LINE__);
        //return false;
    }

    // public:
    function GenerateThumbnail() {

        $this->setOutputFormat();
        $this->phpThumbDebug('8a');
        $this->ResolveSource();
        $this->phpThumbDebug('8b');
        $this->SetCacheFilename();
        $this->phpThumbDebug('8c');
        $this->ExtractEXIFgetImageSize();
        $this->phpThumbDebug('8d');
        if ($this->useRawIMoutput) {
            $this->DebugMessage('Skipping rest of GenerateThumbnail() because ($this->useRawIMoutput == true)', __FILE__, __LINE__);
            return true;
        }
        $this->phpThumbDebug('8e');
        if (!$this->SourceImageToGD()) {
            $this->DebugMessage('SourceImageToGD() failed', __FILE__, __LINE__);
            return false;
        }
        $this->phpThumbDebug('8f');
        $this->Rotate();
        $this->phpThumbDebug('8g');
        $this->CreateGDoutput();
        $this->phpThumbDebug('8h');

        switch ($this->far) {
            case 'L':
            case 'TL':
            case 'BL':
                $destination_offset_x = 0;
                $destination_offset_y = round(($this->thumbnail_height - $this->thumbnail_image_height) / 2);
                break;
            case 'R':
            case 'TR':
            case 'BR':
                $destination_offset_x = round($this->thumbnail_width - $this->thumbnail_image_width);
                $destination_offset_y = round(($this->thumbnail_height - $this->thumbnail_image_height) / 2);
                break;
            case 'T':
            case 'TL':
            case 'TR':
                $destination_offset_x = round(($this->thumbnail_width - $this->thumbnail_image_width) / 2);
                $destination_offset_y = 0;
                break;
            case 'B':
            case 'BL':
            case 'BR':
                $destination_offset_x = round(($this->thumbnail_width - $this->thumbnail_image_width) / 2);
                $destination_offset_y = round($this->thumbnail_height - $this->thumbnail_image_height);
                break;
            case 'C':
            default:
                $destination_offset_x = round(($this->thumbnail_width - $this->thumbnail_image_width) / 2);
                $destination_offset_y = round(($this->thumbnail_height - $this->thumbnail_image_height) / 2);
        }

//		// copy/resize image to appropriate dimensions
//		$borderThickness = 0;
//		if (!empty($this->fltr)) {
//			foreach ($this->fltr as $key => $value) {
//				if (preg_match('#^bord\|([0-9]+)#', $value, $matches)) {
//					$borderThickness = $matches[1];
//					break;
//				}
//			}
//		}
//		if ($borderThickness > 0) {
//			//$this->DebugMessage('Skipping ImageResizeFunction() because BorderThickness="'.$borderThickness.'"', __FILE__, __LINE__);
//			$this->thumbnail_image_height /= 2;
//		}
        $this->ImageResizeFunction(
                $this->gdimg_output, $this->gdimg_source, $destination_offset_x, $destination_offset_y, $this->thumbnailCropX, $this->thumbnailCropY, $this->thumbnail_image_width, $this->thumbnail_image_height, $this->thumbnailCropW, $this->thumbnailCropH
        );

        $this->DebugMessage('memory_get_usage() after copy-resize = ' . (function_exists('memory_get_usage') ? @memory_get_usage() : 'n/a'), __FILE__, __LINE__);
        ImageDestroy($this->gdimg_source);
        $this->DebugMessage('memory_get_usage() after ImageDestroy = ' . (function_exists('memory_get_usage') ? @memory_get_usage() : 'n/a'), __FILE__, __LINE__);

        $this->phpThumbDebug('8i');
        $this->AntiOffsiteLinking();
        $this->phpThumbDebug('8j');
        $this->ApplyFilters();
        $this->phpThumbDebug('8k');
        $this->AlphaChannelFlatten();
        $this->phpThumbDebug('8l');
        $this->MaxFileSize();
        $this->phpThumbDebug('8m');

        $this->DebugMessage('GenerateThumbnail() completed successfully', __FILE__, __LINE__);
        return true;
    }

    // public:
    function RenderOutput() {
        if (!$this->useRawIMoutput && !is_resource($this->gdimg_output)) {
            $this->DebugMessage('RenderOutput() failed because !is_resource($this->gdimg_output)', __FILE__, __LINE__);
            return false;
        }
        if (!$this->thumbnailFormat) {
            $this->DebugMessage('RenderOutput() failed because $this->thumbnailFormat is empty', __FILE__, __LINE__);
            return false;
        }
        if ($this->useRawIMoutput) {
            $this->DebugMessage('RenderOutput copying $this->IMresizedData (' . strlen($this->IMresizedData) . ' bytes) to $this->outputImage', __FILE__, __LINE__);
            $this->outputImageData = $this->IMresizedData;
            return true;
        }

        $builtin_formats = array();
        if (function_exists('ImageTypes')) {
            $imagetypes = ImageTypes();
            $builtin_formats['wbmp'] = (bool) ($imagetypes & IMG_WBMP);
            $builtin_formats['jpg'] = (bool) ($imagetypes & IMG_JPG);
            $builtin_formats['gif'] = (bool) ($imagetypes & IMG_GIF);
            $builtin_formats['png'] = (bool) ($imagetypes & IMG_PNG);
        }
        $this->DebugMessage('RenderOutput() attempting Image' . strtoupper(@$this->thumbnailFormat) . '($this->gdimg_output)', __FILE__, __LINE__);
        ob_start();
        switch ($this->thumbnailFormat) {
            case 'wbmp':
                if (!@$builtin_formats['wbmp']) {
                    $this->DebugMessage('GD does not have required built-in support for WBMP output', __FILE__, __LINE__);
                    ob_end_clean();
                    return false;
                }
                ImageJPEG($this->gdimg_output, null, $this->thumbnailQuality);
                $this->outputImageData = ob_get_contents();
                break;

            case 'jpeg':
            case 'jpg':  // should be "jpeg" not "jpg" but just in case...
                if (!@$builtin_formats['jpg']) {
                    $this->DebugMessage('GD does not have required built-in support for JPEG output', __FILE__, __LINE__);
                    ob_end_clean();
                    return false;
                }
                ImageJPEG($this->gdimg_output, null, $this->thumbnailQuality);
                $this->outputImageData = ob_get_contents();
                break;

            case 'png':
                if (!@$builtin_formats['png']) {
                    $this->DebugMessage('GD does not have required built-in support for PNG output', __FILE__, __LINE__);
                    ob_end_clean();
                    return false;
                }
                ImagePNG($this->gdimg_output);
                $this->outputImageData = ob_get_contents();
                break;

            case 'gif':
                if (!@$builtin_formats['gif']) {
                    $this->DebugMessage('GD does not have required built-in support for GIF output', __FILE__, __LINE__);
                    ob_end_clean();
                    return false;
                }
                ImageGIF($this->gdimg_output);
                $this->outputImageData = ob_get_contents();
                break;

            case 'bmp':
                $ImageOutFunction = '"builtin BMP output"';
                if (!@include_once(dirname(__FILE__) . '/phpthumb.bmp.php')) {
                    $this->DebugMessage('Error including "' . dirname(__FILE__) . '/phpthumb.bmp.php" which is required for BMP format output', __FILE__, __LINE__);
                    ob_end_clean();
                    return false;
                }
                $phpthumb_bmp = new phpthumb_bmp();
                $this->outputImageData = $phpthumb_bmp->GD2BMPstring($this->gdimg_output);
                unset($phpthumb_bmp);
                break;

            case 'ico':
                $ImageOutFunction = '"builtin ICO output"';
                if (!@include_once(dirname(__FILE__) . '/phpthumb.ico.php')) {
                    $this->DebugMessage('Error including "' . dirname(__FILE__) . '/phpthumb.ico.php" which is required for ICO format output', __FILE__, __LINE__);
                    ob_end_clean();
                    return false;
                }
                $phpthumb_ico = new phpthumb_ico();
                $arrayOfOutputImages = array($this->gdimg_output);
                $this->outputImageData = $phpthumb_ico->GD2ICOstring($arrayOfOutputImages);
                unset($phpthumb_ico);
                break;

            default:
                $this->DebugMessage('RenderOutput failed because $this->thumbnailFormat "' . $this->thumbnailFormat . '" is not valid', __FILE__, __LINE__);
                ob_end_clean();
                return false;
        }
        ob_end_clean();
        if (!$this->outputImageData) {
            $this->DebugMessage('RenderOutput() for "' . $this->thumbnailFormat . '" failed', __FILE__, __LINE__);
            ob_end_clean();
            return false;
        }
        $this->DebugMessage('RenderOutput() completing with $this->outputImageData = ' . strlen($this->outputImageData) . ' bytes', __FILE__, __LINE__);
        return true;
    }

    // public:
    function RenderToFile($filename) {
        if (preg_match('#^(f|ht)tps?\://#i', $filename)) {
            $this->DebugMessage('RenderToFile() failed because $filename (' . $filename . ') is a URL', __FILE__, __LINE__);
            return false;
        }
        // render thumbnail to this file only, do not cache, do not output to browser
        //$renderfilename = $this->ResolveFilenameToAbsolute(dirname($filename)).DIRECTORY_SEPARATOR.basename($filename);
        $renderfilename = $filename;
        if (($filename{0} != '/') && ($filename{0} != '\\') && ($filename{1} != ':')) {
            $renderfilename = $this->ResolveFilenameToAbsolute($renderfilename);
        }
        if (!@is_writable(dirname($renderfilename))) {
            $this->DebugMessage('RenderToFile() failed because "' . dirname($renderfilename) . '/" is not writable', __FILE__, __LINE__);
            return false;
        }
        if (@is_file($renderfilename) && !@is_writable($renderfilename)) {
            $this->DebugMessage('RenderToFile() failed because "' . $renderfilename . '" is not writable', __FILE__, __LINE__);
            return false;
        }

        if ($this->RenderOutput()) {
            if (file_put_contents($renderfilename, $this->outputImageData)) {
                $this->DebugMessage('RenderToFile(' . $renderfilename . ') succeeded', __FILE__, __LINE__);
                return true;
            }
            if (!@file_exists($renderfilename)) {
                $this->DebugMessage('RenderOutput [' . $this->thumbnailFormat . '(' . $renderfilename . ')] did not appear to fail, but the output image does not exist either...', __FILE__, __LINE__);
            }
        } else {
            $this->DebugMessage('RenderOutput [' . $this->thumbnailFormat . '(' . $renderfilename . ')] failed', __FILE__, __LINE__);
        }
        return false;
    }

    // public:
    function OutputThumbnail() {
        $this->purgeTempFiles();

        if (!$this->useRawIMoutput && !is_resource($this->gdimg_output)) {
            $this->DebugMessage('OutputThumbnail() failed because !is_resource($this->gdimg_output)', __FILE__, __LINE__);
            return false;
        }
        if (headers_sent()) {
            return $this->ErrorImage('OutputThumbnail() failed - headers already sent');
            exit;
        }

        $downloadfilename = phpthumb_functions::SanitizeFilename(is_string($this->sia) ? $this->sia : ($this->down ? $this->down : 'phpThumb_generated_thumbnail' . '.' . $this->thumbnailFormat));
        $this->DebugMessage('Content-Disposition header filename set to "' . $downloadfilename . '"', __FILE__, __LINE__);
        if ($downloadfilename) {
            header('Content-Disposition: ' . ($this->down ? 'attachment' : 'inline') . '; filename="' . $downloadfilename . '"');
        } else {
            $this->DebugMessage('failed to send Content-Disposition header because $downloadfilename is empty', __FILE__, __LINE__);
        }

        if ($this->useRawIMoutput) {

            header('Content-Type: ' . phpthumb_functions::ImageTypeToMIMEtype($this->thumbnailFormat));
            echo $this->IMresizedData;
        } else {

            $this->DebugMessage('ImageInterlace($this->gdimg_output, ' . intval($this->config_output_interlace) . ')', __FILE__, __LINE__);
            ImageInterlace($this->gdimg_output, intval($this->config_output_interlace));
            switch ($this->thumbnailFormat) {
                case 'jpeg':
                    header('Content-Type: ' . phpthumb_functions::ImageTypeToMIMEtype($this->thumbnailFormat));
                    $ImageOutFunction = 'image' . $this->thumbnailFormat;
                    @$ImageOutFunction($this->gdimg_output, '', $this->thumbnailQuality);
                    break;

                case 'png':
                case 'gif':
                    header('Content-Type: ' . phpthumb_functions::ImageTypeToMIMEtype($this->thumbnailFormat));
                    $ImageOutFunction = 'image' . $this->thumbnailFormat;
                    @$ImageOutFunction($this->gdimg_output);
                    break;

                case 'bmp':
                    if (!@include_once(dirname(__FILE__) . '/phpthumb.bmp.php')) {
                        $this->DebugMessage('Error including "' . dirname(__FILE__) . '/phpthumb.bmp.php" which is required for BMP format output', __FILE__, __LINE__);
                        return false;
                    }
                    $phpthumb_bmp = new phpthumb_bmp();
                    if (is_object($phpthumb_bmp)) {
                        $bmp_data = $phpthumb_bmp->GD2BMPstring($this->gdimg_output);
                        unset($phpthumb_bmp);
                        if (!$bmp_data) {
                            $this->DebugMessage('$phpthumb_bmp->GD2BMPstring() failed', __FILE__, __LINE__);
                            return false;
                        }
                        header('Content-Type: ' . phpthumb_functions::ImageTypeToMIMEtype($this->thumbnailFormat));
                        echo $bmp_data;
                    } else {
                        $this->DebugMessage('new phpthumb_bmp() failed', __FILE__, __LINE__);
                        return false;
                    }
                    break;

                case 'ico':
                    if (!@include_once(dirname(__FILE__) . '/phpthumb.ico.php')) {
                        $this->DebugMessage('Error including "' . dirname(__FILE__) . '/phpthumb.ico.php" which is required for ICO format output', __FILE__, __LINE__);
                        return false;
                    }
                    $phpthumb_ico = new phpthumb_ico();
                    if (is_object($phpthumb_ico)) {
                        $arrayOfOutputImages = array($this->gdimg_output);
                        $ico_data = $phpthumb_ico->GD2ICOstring($arrayOfOutputImages);
                        unset($phpthumb_ico);
                        if (!$ico_data) {
                            $this->DebugMessage('$phpthumb_ico->GD2ICOstring() failed', __FILE__, __LINE__);
                            return false;
                        }
                        header('Content-Type: ' . phpthumb_functions::ImageTypeToMIMEtype($this->thumbnailFormat));
                        echo $ico_data;
                    } else {
                        $this->DebugMessage('new phpthumb_ico() failed', __FILE__, __LINE__);
                        return false;
                    }
                    break;

                default:
                    $this->DebugMessage('OutputThumbnail failed because $this->thumbnailFormat "' . $this->thumbnailFormat . '" is not valid', __FILE__, __LINE__);
                    return false;
                    break;
            }
        }
        return true;
    }

    // public:
    function CleanUpCacheDirectory() {
        $this->DebugMessage('CleanUpCacheDirectory() set to purge (' . (is_null($this->config_cache_maxage) ? 'NULL' : number_format($this->config_cache_maxage / 86400, 1)) . ' days; ' . (is_null($this->config_cache_maxsize) ? 'NULL' : number_format($this->config_cache_maxsize / 1048576, 2)) . ' MB; ' . (is_null($this->config_cache_maxfiles) ? 'NULL' : number_format($this->config_cache_maxfiles)) . ' files)', __FILE__, __LINE__);

        if (!is_writable($this->config_cache_directory)) {
            $this->DebugMessage('CleanUpCacheDirectory() skipped because "' . $this->config_cache_directory . '" is not writable', __FILE__, __LINE__);
            return true;
        }

        // cache status of cache directory for 1 hour to avoid hammering the filesystem functions
        $phpThumbCacheStats_filename = $this->config_cache_directory . DIRECTORY_SEPARATOR . 'phpThumbCacheStats.txt';
        if (file_exists($phpThumbCacheStats_filename) && is_readable($phpThumbCacheStats_filename) && (filemtime($phpThumbCacheStats_filename) >= (time() - 3600))) {
            $this->DebugMessage('CleanUpCacheDirectory() skipped because "' . $phpThumbCacheStats_filename . '" is recently modified', __FILE__, __LINE__);
            return true;
        }
        touch($phpThumbCacheStats_filename);

        $DeletedKeys = array();
        $AllFilesInCacheDirectory = array();
        if (($this->config_cache_maxage > 0) || ($this->config_cache_maxsize > 0) || ($this->config_cache_maxfiles > 0)) {
            $CacheDirOldFilesAge = array();
            $CacheDirOldFilesSize = array();
            $AllFilesInCacheDirectory = phpthumb_functions::GetAllFilesInSubfolders($this->config_cache_directory);
            foreach ($AllFilesInCacheDirectory as $fullfilename) {
                if (preg_match('#^' . preg_quote($this->config_cache_prefix) . '#i', $fullfilename) && file_exists($fullfilename)) {
                    $CacheDirOldFilesAge[$fullfilename] = @fileatime($fullfilename);
                    if ($CacheDirOldFilesAge[$fullfilename] == 0) {
                        $CacheDirOldFilesAge[$fullfilename] = @filemtime($fullfilename);
                    }
                    $CacheDirOldFilesSize[$fullfilename] = @filesize($fullfilename);
                }
            }
            if (empty($CacheDirOldFilesSize)) {
                return true;
            }
            $DeletedKeys['zerobyte'] = array();
            foreach ($CacheDirOldFilesSize as $fullfilename => $filesize) {
                // purge all zero-size files more than an hour old (to prevent trying to delete just-created and/or in-use files)
                $cutofftime = time() - 3600;
                if (($filesize == 0) && ($CacheDirOldFilesAge[$fullfilename] < $cutofftime)) {
                    $this->DebugMessage('deleting "' . $fullfilename . '"', __FILE__, __LINE__);
                    if (@unlink($fullfilename)) {
                        $DeletedKeys['zerobyte'][] = $fullfilename;
                        unset($CacheDirOldFilesSize[$fullfilename]);
                        unset($CacheDirOldFilesAge[$fullfilename]);
                    }
                }
            }
            $this->DebugMessage('CleanUpCacheDirectory() purged ' . count($DeletedKeys['zerobyte']) . ' zero-byte files', __FILE__, __LINE__);
            asort($CacheDirOldFilesAge);

            if ($this->config_cache_maxfiles > 0) {
                $TotalCachedFiles = count($CacheDirOldFilesAge);
                $DeletedKeys['maxfiles'] = array();
                foreach ($CacheDirOldFilesAge as $fullfilename => $filedate) {
                    if ($TotalCachedFiles > $this->config_cache_maxfiles) {
                        $this->DebugMessage('deleting "' . $fullfilename . '"', __FILE__, __LINE__);
                        if (@unlink($fullfilename)) {
                            $TotalCachedFiles--;
                            $DeletedKeys['maxfiles'][] = $fullfilename;
                        }
                    } else {
                        // there are few enough files to keep the rest
                        break;
                    }
                }
                $this->DebugMessage('CleanUpCacheDirectory() purged ' . count($DeletedKeys['maxfiles']) . ' files based on (config_cache_maxfiles=' . $this->config_cache_maxfiles . ')', __FILE__, __LINE__);
                foreach ($DeletedKeys['maxfiles'] as $fullfilename) {
                    unset($CacheDirOldFilesAge[$fullfilename]);
                    unset($CacheDirOldFilesSize[$fullfilename]);
                }
            }

            if ($this->config_cache_maxage > 0) {
                $mindate = time() - $this->config_cache_maxage;
                $DeletedKeys['maxage'] = array();
                foreach ($CacheDirOldFilesAge as $fullfilename => $filedate) {
                    if ($filedate > 0) {
                        if ($filedate < $mindate) {
                            $this->DebugMessage('deleting "' . $fullfilename . '"', __FILE__, __LINE__);
                            if (@unlink($fullfilename)) {
                                $DeletedKeys['maxage'][] = $fullfilename;
                            }
                        } else {
                            // the rest of the files are new enough to keep
                            break;
                        }
                    }
                }
                $this->DebugMessage('CleanUpCacheDirectory() purged ' . count($DeletedKeys['maxage']) . ' files based on (config_cache_maxage=' . $this->config_cache_maxage . ')', __FILE__, __LINE__);
                foreach ($DeletedKeys['maxage'] as $fullfilename) {
                    unset($CacheDirOldFilesAge[$fullfilename]);
                    unset($CacheDirOldFilesSize[$fullfilename]);
                }
            }

            if ($this->config_cache_maxsize > 0) {
                $TotalCachedFileSize = array_sum($CacheDirOldFilesSize);
                $DeletedKeys['maxsize'] = array();
                foreach ($CacheDirOldFilesAge as $fullfilename => $filedate) {
                    if ($TotalCachedFileSize > $this->config_cache_maxsize) {
                        $this->DebugMessage('deleting "' . $fullfilename . '"', __FILE__, __LINE__);
                        if (@unlink($fullfilename)) {
                            $TotalCachedFileSize -= $CacheDirOldFilesSize[$fullfilename];
                            $DeletedKeys['maxsize'][] = $fullfilename;
                        }
                    } else {
                        // the total filesizes are small enough to keep the rest of the files
                        break;
                    }
                }
                $this->DebugMessage('CleanUpCacheDirectory() purged ' . count($DeletedKeys['maxsize']) . ' files based on (config_cache_maxsize=' . $this->config_cache_maxsize . ')', __FILE__, __LINE__);
                foreach ($DeletedKeys['maxsize'] as $fullfilename) {
                    unset($CacheDirOldFilesAge[$fullfilename]);
                    unset($CacheDirOldFilesSize[$fullfilename]);
                }
            }
        } else {
            $this->DebugMessage('skipping CleanUpCacheDirectory() because config set to not use it', __FILE__, __LINE__);
        }
        $totalpurged = 0;
        foreach ($DeletedKeys as $key => $value) {
            $totalpurged += count($value);
        }
        $this->DebugMessage('CleanUpCacheDirectory() purged ' . $totalpurged . ' files (from ' . count($AllFilesInCacheDirectory) . ') based on config settings', __FILE__, __LINE__);
        if ($totalpurged > 0) {
            $empty_dirs = array();
            foreach ($AllFilesInCacheDirectory as $fullfilename) {
                if (is_dir($fullfilename)) {
                    $empty_dirs[realpath($fullfilename)] = 1;
                } else {
                    unset($empty_dirs[realpath(dirname($fullfilename))]);
                }
            }
            krsort($empty_dirs);
            $totalpurgeddirs = 0;
            foreach ($empty_dirs as $empty_dir => $dummy) {
                if ($empty_dir == $this->config_cache_directory) {
                    // shouldn't happen, but just in case, don't let it delete actual cache directory
                    continue;
                } elseif (@rmdir($empty_dir)) {
                    $totalpurgeddirs++;
                } else {
                    $this->DebugMessage('failed to rmdir(' . $empty_dir . ')', __FILE__, __LINE__);
                }
            }
            $this->DebugMessage('purged ' . $totalpurgeddirs . ' empty directories', __FILE__, __LINE__);
        }
        return true;
    }

    //////////////////////////////////////////////////////////////////////
    // private: re-initializator (call between rendering multiple images with one object)
    function resetObject() {
        $class_vars = get_class_vars(get_class($this));
        foreach ($class_vars as $key => $value) {
            // do not clobber debug or config info
            if (!preg_match('#^(config_|debug|fatalerror)#i', $key)) {
                $this->$key = $value;
            }
        }
        $this->phpThumb(); // re-initialize some class variables
        return true;
    }

    //////////////////////////////////////////////////////////////////////

    function ResolveSource() {
        if (is_resource($this->gdimg_source)) {
            $this->DebugMessage('ResolveSource() exiting because is_resource($this->gdimg_source)', __FILE__, __LINE__);
            return true;
        }
        if ($this->rawImageData) {
            $this->sourceFilename = null;
            $this->DebugMessage('ResolveSource() exiting because $this->rawImageData is set (' . number_format(strlen($this->rawImageData)) . ' bytes)', __FILE__, __LINE__);
            return true;
        }
        if ($this->sourceFilename) {
            $this->sourceFilename = $this->ResolveFilenameToAbsolute($this->sourceFilename);
            $this->DebugMessage('$this->sourceFilename set to "' . $this->sourceFilename . '"', __FILE__, __LINE__);
        } elseif ($this->src) {
            $this->sourceFilename = $this->ResolveFilenameToAbsolute($this->src);
            $this->DebugMessage('$this->sourceFilename set to "' . $this->sourceFilename . '" from $this->src (' . $this->src . ')', __FILE__, __LINE__);
        } else {
            return $this->ErrorImage('$this->sourceFilename and $this->src are both empty');
        }
        if ($this->iswindows && ((substr($this->sourceFilename, 0, 2) == '//') || (substr($this->sourceFilename, 0, 2) == '\\\\'))) {
            // Windows \\share\filename.ext
        } elseif (preg_match('#^(f|ht)tps?\://#i', $this->sourceFilename)) {
            // URL
            if ($this->config_http_user_agent) {
                ini_set('user_agent', $this->config_http_user_agent);
            }
        } elseif (!@file_exists($this->sourceFilename)) {
            return $this->ErrorImage('"' . $this->sourceFilename . '" does not exist');
        } elseif (!@is_file($this->sourceFilename)) {
            return $this->ErrorImage('"' . $this->sourceFilename . '" is not a file');
        }
        return true;
    }

    function setOutputFormat() {
        static $alreadyCalled = false;
        if ($this->thumbnailFormat && $alreadyCalled) {
            return true;
        }
        $alreadyCalled = true;

        $AvailableImageOutputFormats = array();
        $AvailableImageOutputFormats[] = 'text';
        if (@is_readable(dirname(__FILE__) . '/phpthumb.ico.php')) {
            $AvailableImageOutputFormats[] = 'ico';
        }
        if (@is_readable(dirname(__FILE__) . '/phpthumb.bmp.php')) {
            $AvailableImageOutputFormats[] = 'bmp';
        }

        $this->thumbnailFormat = 'ico';

        // Set default output format based on what image types are available
        if (function_exists('ImageTypes')) {
            $imagetypes = ImageTypes();
            if ($imagetypes & IMG_WBMP) {
                $this->thumbnailFormat = 'wbmp';
                $AvailableImageOutputFormats[] = 'wbmp';
            }
            if ($imagetypes & IMG_GIF) {
                $this->thumbnailFormat = 'gif';
                $AvailableImageOutputFormats[] = 'gif';
            }
            if ($imagetypes & IMG_PNG) {
                $this->thumbnailFormat = 'png';
                $AvailableImageOutputFormats[] = 'png';
            }
            if ($imagetypes & IMG_JPG) {
                $this->thumbnailFormat = 'jpeg';
                $AvailableImageOutputFormats[] = 'jpeg';
            }
        } else {
            //return $this->ErrorImage('ImageTypes() does not exist - GD support might not be enabled?');
            $this->DebugMessage('ImageTypes() does not exist - GD support might not be enabled?', __FILE__, __LINE__);
        }
        if ($this->ImageMagickVersion()) {
            $IMformats = array('jpeg', 'png', 'gif', 'bmp', 'ico', 'wbmp');
            $this->DebugMessage('Addding ImageMagick formats to $AvailableImageOutputFormats (' . implode(';', $AvailableImageOutputFormats) . ')', __FILE__, __LINE__);
            foreach ($IMformats as $key => $format) {
                $AvailableImageOutputFormats[] = $format;
            }
        }
        $AvailableImageOutputFormats = array_unique($AvailableImageOutputFormats);
        $this->DebugMessage('$AvailableImageOutputFormats = array(' . implode(';', $AvailableImageOutputFormats) . ')', __FILE__, __LINE__);

        $this->f = preg_replace('#[^a-z]#', '', strtolower($this->f));
        if (strtolower($this->config_output_format) == 'jpg') {
            $this->config_output_format = 'jpeg';
        }
        if (strtolower($this->f) == 'jpg') {
            $this->f = 'jpeg';
        }
        if (phpthumb_functions::CaseInsensitiveInArray($this->config_output_format, $AvailableImageOutputFormats)) {
            // set output format to config default if that format is available
            $this->DebugMessage('$this->thumbnailFormat set to $this->config_output_format "' . strtolower($this->config_output_format) . '"', __FILE__, __LINE__);
            $this->thumbnailFormat = strtolower($this->config_output_format);
        } elseif ($this->config_output_format) {
            $this->DebugMessage('$this->thumbnailFormat staying as "' . $this->thumbnailFormat . '" because $this->config_output_format (' . strtolower($this->config_output_format) . ') is not in $AvailableImageOutputFormats', __FILE__, __LINE__);
        }
        if ($this->f && (phpthumb_functions::CaseInsensitiveInArray($this->f, $AvailableImageOutputFormats))) {
            // override output format if $this->f is set and that format is available
            $this->DebugMessage('$this->thumbnailFormat set to $this->f "' . strtolower($this->f) . '"', __FILE__, __LINE__);
            $this->thumbnailFormat = strtolower($this->f);
        } elseif ($this->f) {
            $this->DebugMessage('$this->thumbnailFormat staying as "' . $this->thumbnailFormat . '" because $this->f (' . strtolower($this->f) . ') is not in $AvailableImageOutputFormats', __FILE__, __LINE__);
        }

        // for JPEG images, quality 1 (worst) to 99 (best)
        // quality < 25 is nasty, with not much size savings - not recommended
        // problems with 100 - invalid JPEG?
        $this->thumbnailQuality = max(1, min(99, ($this->q ? intval($this->q) : 75)));
        $this->DebugMessage('$this->thumbnailQuality set to "' . $this->thumbnailQuality . '"', __FILE__, __LINE__);

        return true;
    }

    function setCacheDirectory() {
        // resolve cache directory to absolute pathname
        $this->DebugMessage('setCacheDirectory() starting with config_cache_directory = "' . $this->config_cache_directory . '"', __FILE__, __LINE__);
        if (substr($this->config_cache_directory, 0, 1) == '.') {
            if (preg_match('#^(f|ht)tps?\://#i', $this->src)) {
                if (!$this->config_cache_disable_warning) {
                    $this->ErrorImage('$this->config_cache_directory (' . $this->config_cache_directory . ') cannot be used for remote images. Adjust "cache_directory" or "cache_disable_warning" in phpThumb.config.php');
                }
            } elseif ($this->src) {
                // resolve relative cache directory to source image
                $this->config_cache_directory = dirname($this->ResolveFilenameToAbsolute($this->src)) . DIRECTORY_SEPARATOR . $this->config_cache_directory;
            } else {
                // $this->new is probably set
            }
        }
        if (substr($this->config_cache_directory, -1) == '/') {
            $this->config_cache_directory = substr($this->config_cache_directory, 0, -1);
        }
        if ($this->iswindows) {
            $this->config_cache_directory = str_replace('/', DIRECTORY_SEPARATOR, $this->config_cache_directory);
        }
        if ($this->config_cache_directory) {
            $real_cache_path = realpath($this->config_cache_directory);
            if (!$real_cache_path) {
                $this->DebugMessage('realpath($this->config_cache_directory) failed for "' . $this->config_cache_directory . '"', __FILE__, __LINE__);
                if (!is_dir($this->config_cache_directory)) {
                    $this->DebugMessage('!is_dir(' . $this->config_cache_directory . ')', __FILE__, __LINE__);
                }
            }
            if ($real_cache_path) {
                $this->DebugMessage('setting config_cache_directory to realpath(' . $this->config_cache_directory . ') = "' . $real_cache_path . '"', __FILE__, __LINE__);
                $this->config_cache_directory = $real_cache_path;
            }
        }
        if (!is_dir($this->config_cache_directory)) {
            if (!$this->config_cache_disable_warning) {
                $this->ErrorImage('$this->config_cache_directory (' . $this->config_cache_directory . ') does not exist. Adjust "cache_directory" or "cache_disable_warning" in phpThumb.config.php');
            }
            $this->DebugMessage('$this->config_cache_directory (' . $this->config_cache_directory . ') is not a directory', __FILE__, __LINE__);
            $this->config_cache_directory = null;
        } elseif (!@is_writable($this->config_cache_directory)) {
            $this->DebugMessage('$this->config_cache_directory is not writable (' . $this->config_cache_directory . ')', __FILE__, __LINE__);
        }

        $this->InitializeTempDirSetting();
        if (!@is_dir($this->config_temp_directory) && !@is_writable($this->config_temp_directory) && @is_dir($this->config_cache_directory) && @is_writable($this->config_cache_directory)) {
            $this->DebugMessage('setting $this->config_temp_directory = $this->config_cache_directory (' . $this->config_cache_directory . ')', __FILE__, __LINE__);
            $this->config_temp_directory = $this->config_cache_directory;
        }
        return true;
    }

    function ResolveFilenameToAbsolute($filename) {
        if (empty($filename)) {
            return false;
        }

        if (preg_match('#^[a-z0-9]+\:/{1,2}#i', $filename)) {
            // eg: http://host/path/file.jpg (HTTP URL)
            // eg: ftp://host/path/file.jpg  (FTP URL)
            // eg: data1:/path/file.jpg      (Netware path)
            //$AbsoluteFilename = $filename;
            return $filename;
        } elseif ($this->iswindows && isset($filename{1}) && ($filename{1} == ':')) {

            // absolute pathname (Windows)
            $AbsoluteFilename = $filename;
        } elseif ($this->iswindows && ((substr($filename, 0, 2) == '//') || (substr($filename, 0, 2) == '\\\\'))) {

            // absolute pathname (Windows)
            $AbsoluteFilename = $filename;
        } elseif ($filename{0} == '/') {

            if (@is_readable($filename) && !@is_readable($this->config_document_root . $filename)) {

                // absolute filename (*nix)
                $AbsoluteFilename = $filename;
            } elseif (isset($filename{1}) && ($filename{1} == '~')) {

                // /~user/path
                if ($ApacheLookupURIarray = phpthumb_functions::ApacheLookupURIarray($filename)) {
                    $AbsoluteFilename = $ApacheLookupURIarray['filename'];
                } else {
                    $AbsoluteFilename = realpath($filename);
                    if (@is_readable($AbsoluteFilename)) {
                        $this->DebugMessage('phpthumb_functions::ApacheLookupURIarray() failed for "' . $filename . '", but the correct filename (' . $AbsoluteFilename . ') seems to have been resolved with realpath($filename)', __FILE__, __LINE__);
                    } elseif (is_dir(dirname($AbsoluteFilename))) {
                        $this->DebugMessage('phpthumb_functions::ApacheLookupURIarray() failed for "' . dirname($filename) . '", but the correct directory (' . dirname($AbsoluteFilename) . ') seems to have been resolved with realpath(.)', __FILE__, __LINE__);
                    } else {
                        return $this->ErrorImage('phpthumb_functions::ApacheLookupURIarray() failed for "' . $filename . '". This has been known to fail on Apache2 - try using the absolute filename for the source image (ex: "/home/user/httpdocs/image.jpg" instead of "/~user/image.jpg")');
                    }
                }
            } else {

                // relative filename (any OS)
                if (preg_match('#^' . preg_quote($this->config_document_root) . '#', $filename)) {
                    $AbsoluteFilename = $filename;
                    $this->DebugMessage('ResolveFilenameToAbsolute() NOT prepending $this->config_document_root (' . $this->config_document_root . ') to $filename (' . $filename . ') resulting in ($AbsoluteFilename = "' . $AbsoluteFilename . '")', __FILE__, __LINE__);
                } else {
                    $AbsoluteFilename = $this->config_document_root . $filename;
                    $this->DebugMessage('ResolveFilenameToAbsolute() prepending $this->config_document_root (' . $this->config_document_root . ') to $filename (' . $filename . ') resulting in ($AbsoluteFilename = "' . $AbsoluteFilename . '")', __FILE__, __LINE__);
                }
            }
        } else {

            // relative to current directory (any OS)
            //$AbsoluteFilename = $this->config_document_root.preg_replace('#[/\\\\]#', DIRECTORY_SEPARATOR, dirname(@$_SERVER['PHP_SELF'])).DIRECTORY_SEPARATOR.preg_replace('#[/\\\\]#', DIRECTORY_SEPARATOR, $filename);
            $AbsoluteFilename = dirname(__FILE__) . DIRECTORY_SEPARATOR . preg_replace('#[/\\\\]#', DIRECTORY_SEPARATOR, $filename);

            //if (!@file_exists($AbsoluteFilename) && @file_exists(realpath($this->DotPadRelativeDirectoryPath($filename)))) {
            //	$AbsoluteFilename = realpath($this->DotPadRelativeDirectoryPath($filename));
            //}

            if (substr(dirname(@$_SERVER['PHP_SELF']), 0, 2) == '/~') {
                if ($ApacheLookupURIarray = phpthumb_functions::ApacheLookupURIarray(dirname(@$_SERVER['PHP_SELF']))) {
                    $AbsoluteFilename = $ApacheLookupURIarray['filename'] . DIRECTORY_SEPARATOR . $filename;
                } else {
                    $AbsoluteFilename = realpath('.') . DIRECTORY_SEPARATOR . $filename;
                    if (@is_readable($AbsoluteFilename)) {
                        $this->DebugMessage('phpthumb_functions::ApacheLookupURIarray() failed for "' . dirname(@$_SERVER['PHP_SELF']) . '", but the correct filename (' . $AbsoluteFilename . ') seems to have been resolved with realpath(.)/$filename', __FILE__, __LINE__);
                    } elseif (is_dir(dirname($AbsoluteFilename))) {
                        $this->DebugMessage('phpthumb_functions::ApacheLookupURIarray() failed for "' . dirname(@$_SERVER['PHP_SELF']) . '", but the correct directory (' . dirname($AbsoluteFilename) . ') seems to have been resolved with realpath(.)', __FILE__, __LINE__);
                    } else {
                        return $this->ErrorImage('phpthumb_functions::ApacheLookupURIarray() failed for "' . dirname(@$_SERVER['PHP_SELF']) . '". This has been known to fail on Apache2 - try using the absolute filename for the source image');
                    }
                }
            }
        }
        if (is_link($AbsoluteFilename)) {
            $this->DebugMessage('is_link()==true, changing "' . $AbsoluteFilename . '" to "' . readlink($AbsoluteFilename) . '"', __FILE__, __LINE__);
            $AbsoluteFilename = readlink($AbsoluteFilename);
        }
        if (realpath($AbsoluteFilename)) {
            $AbsoluteFilename = realpath($AbsoluteFilename);
        }
        if ($this->iswindows) {
            $AbsoluteFilename = preg_replace('#^' . preg_quote(realpath($this->config_document_root)) . '#i', realpath($this->config_document_root), $AbsoluteFilename);
            $AbsoluteFilename = str_replace(DIRECTORY_SEPARATOR, '/', $AbsoluteFilename);
        }
        if (!$this->config_allow_src_above_docroot && !preg_match('#^' . preg_quote(str_replace(DIRECTORY_SEPARATOR, '/', realpath($this->config_document_root))) . '#', $AbsoluteFilename)) {
            $this->DebugMessage('!$this->config_allow_src_above_docroot therefore setting "' . $AbsoluteFilename . '" (outside "' . realpath($this->config_document_root) . '") to null', __FILE__, __LINE__);
            return false;
        }
        if (!$this->config_allow_src_above_phpthumb && !preg_match('#^' . preg_quote(str_replace(DIRECTORY_SEPARATOR, '/', dirname(__FILE__))) . '#', $AbsoluteFilename)) {
            $this->DebugMessage('!$this->config_allow_src_above_phpthumb therefore setting "' . $AbsoluteFilename . '" (outside "' . dirname(__FILE__) . '") to null', __FILE__, __LINE__);
            return false;
        }
        return $AbsoluteFilename;
    }

    function file_exists_ignoreopenbasedir($filename, $cached=true) {
        static $open_basedirs = null;
        static $file_exists_cache = array();
        if (!$cached || !isset($file_exists_cache[$filename])) {
            if (is_null($open_basedirs)) {
                $open_basedirs = explode(';', ini_get('open_basedir'));
            }
            if (empty($open_basedirs) || in_array(dirname($filename), $open_basedirs)) {
                $file_exists_cache[$filename] = file_exists($filename);
            } elseif ($this->iswindows) {
                $ls_filename = trim(phpthumb_functions::SafeExec('dir ' . escapeshellarg($filename)));
                $file_exists_cache[$filename] = !preg_match('#File Not Found#i', $ls_filename);
            } else {
                $ls_filename = trim(phpthumb_functions::SafeExec('ls ' . escapeshellarg($filename)));
                $file_exists_cache[$filename] = ($ls_filename == $filename);
            }
        }
        return $file_exists_cache[$filename];
    }

    function ImageMagickWhichConvert() {
        static $WhichConvert = null;
        if (is_null($WhichConvert)) {
            if ($this->iswindows) {
                $WhichConvert = false;
            } else {
                $WhichConvert = trim(phpthumb_functions::SafeExec('which convert'));
            }
        }
        return $WhichConvert;
    }

    function ImageMagickCommandlineBase() {
        static $commandline = null;
        if (is_null($commandline)) {
            if ($this->issafemode) {
                $commandline = '';
                return $commandline;
            }
            $commandline = (!is_null($this->config_imagemagick_path) ? $this->config_imagemagick_path : '');

            if ($this->config_imagemagick_path && ($this->config_imagemagick_path != realpath($this->config_imagemagick_path))) {
                if (@is_executable(realpath($this->config_imagemagick_path))) {
                    $this->DebugMessage('Changing $this->config_imagemagick_path (' . $this->config_imagemagick_path . ') to realpath($this->config_imagemagick_path) (' . realpath($this->config_imagemagick_path) . ')', __FILE__, __LINE__);
                    $this->config_imagemagick_path = realpath($this->config_imagemagick_path);
                } else {
                    $this->DebugMessage('Leaving $this->config_imagemagick_path as (' . $this->config_imagemagick_path . ') because !is_execuatable(realpath($this->config_imagemagick_path)) (' . realpath($this->config_imagemagick_path) . ')', __FILE__, __LINE__);
                }
            }
            $this->DebugMessage('                  file_exists(' . $this->config_imagemagick_path . ') = ' . intval(@file_exists($this->config_imagemagick_path)), __FILE__, __LINE__);
            $this->DebugMessage('file_exists_ignoreopenbasedir(' . $this->config_imagemagick_path . ') = ' . intval($this->file_exists_ignoreopenbasedir($this->config_imagemagick_path)), __FILE__, __LINE__);
            $this->DebugMessage('                      is_file(' . $this->config_imagemagick_path . ') = ' . intval(@is_file($this->config_imagemagick_path)), __FILE__, __LINE__);
            $this->DebugMessage('                is_executable(' . $this->config_imagemagick_path . ') = ' . intval(@is_executable($this->config_imagemagick_path)), __FILE__, __LINE__);

            if ($this->file_exists_ignoreopenbasedir($this->config_imagemagick_path)) {
                $this->DebugMessage('using ImageMagick path from $this->config_imagemagick_path (' . $this->config_imagemagick_path . ')', __FILE__, __LINE__);
                if ($this->iswindows) {
                    $commandline = substr($this->config_imagemagick_path, 0, 2) . ' && cd ' . escapeshellarg(str_replace('/', DIRECTORY_SEPARATOR, substr(dirname($this->config_imagemagick_path), 2))) . ' && ' . escapeshellarg(basename($this->config_imagemagick_path));
                } else {
                    $commandline = escapeshellarg($this->config_imagemagick_path);
                }
                return $commandline;
            }

            $which_convert = $this->ImageMagickWhichConvert();
            $IMversion = $this->ImageMagickVersion();

            if ($which_convert && ($which_convert{0} == '/') && $this->file_exists_ignoreopenbasedir($which_convert)) {

                // `which convert` *should* return the path if "convert" exist, or nothing if it doesn't
                // other things *may* get returned, like "sh: convert: not found" or "no convert in /usr/local/bin /usr/sbin /usr/bin /usr/ccs/bin"
                // so only do this if the value returned exists as a file
                $this->DebugMessage('using ImageMagick path from `which convert` (' . $which_convert . ')', __FILE__, __LINE__);
                $commandline = 'convert';
            } elseif ($IMversion) {

                $this->DebugMessage('setting ImageMagick path to $this->config_imagemagick_path (' . $this->config_imagemagick_path . ') [' . $IMversion . ']', __FILE__, __LINE__);
                $commandline = $this->config_imagemagick_path;
            } else {

                $this->DebugMessage('ImageMagickThumbnailToGD() aborting because cannot find convert in $this->config_imagemagick_path (' . $this->config_imagemagick_path . '), and `which convert` returned (' . $which_convert . ')', __FILE__, __LINE__);
                $commandline = '';
            }
        }
        return $commandline;
    }

    function ImageMagickVersion($returnRAW=false) {
        static $versionstring = null;
        if (is_null($versionstring)) {
            $versionstring = array(0 => false, 1 => false);
            $commandline = $this->ImageMagickCommandlineBase();
            $commandline = (!is_null($commandline) ? $commandline : '');

            if ($commandline) {
                $commandline .= ' --version';
                $this->DebugMessage('ImageMagick version checked with "' . $commandline . '"', __FILE__, __LINE__);
                $versionstring[1] = trim(phpthumb_functions::SafeExec($commandline));
                if (preg_match('#^Version: [^0-9]*([ 0-9\\.\\:Q/\\-]+) (http|file)\:#i', $versionstring[1], $matches)) {
                    $versionstring[0] = $matches[1];
                } else {
                    $versionstring[0] = false;
                    $this->DebugMessage('ImageMagick did not return recognized version string (' . $versionstring[1] . ')', __FILE__, __LINE__);
                }
                $this->DebugMessage('ImageMagick convert --version says "' . @$matches[0] . '"', __FILE__, __LINE__);
            }
        }
        return $versionstring[intval($returnRAW)];
    }

    function ImageMagickSwitchAvailable($switchname) {
        static $IMoptions = null;
        if (is_null($IMoptions)) {
            $IMoptions = array();
            $commandline = $this->ImageMagickCommandlineBase();
            if (!is_null($commandline)) {
                $commandline .= ' -help';
                $IMhelp_lines = explode("\n", phpthumb_functions::SafeExec($commandline));
                foreach ($IMhelp_lines as $line) {
                    if (preg_match('#^[\\+\\-]([a-z\\-]+) #', trim($line), $matches)) {
                        $IMoptions[$matches[1]] = true;
                    }
                }
            }
        }
        if (is_array($switchname)) {
            $allOK = true;
            foreach ($switchname as $key => $value) {
                if (!isset($IMoptions[$value])) {
                    $allOK = false;
                    break;
                }
            }
            $this->DebugMessage('ImageMagickSwitchAvailable(' . implode(';', $switchname) . ') = ' . intval($allOK) . '', __FILE__, __LINE__);
        } else {
            $allOK = isset($IMoptions[$switchname]);
            $this->DebugMessage('ImageMagickSwitchAvailable(' . $switchname . ') = ' . intval($allOK) . '', __FILE__, __LINE__);
        }
        return $allOK;
    }

    function ImageMagickFormatsList() {
        static $IMformatsList = null;
        if (is_null($IMformatsList)) {
            $IMformatsList = '';
            $commandline = $this->ImageMagickCommandlineBase();
            if (!is_null($commandline)) {
                $commandline = dirname($commandline) . DIRECTORY_SEPARATOR . str_replace('convert', 'identify', basename($commandline));
                $commandline .= ' -list format';
                $IMformatsList = phpthumb_functions::SafeExec($commandline);
            }
        }
        return $IMformatsList;
    }

    function SourceDataToTempFile() {
        if ($IMtempSourceFilename = $this->phpThumb_tempnam()) {
            $IMtempSourceFilename = realpath($IMtempSourceFilename);
            ob_start();
            $fp_tempfile = fopen($IMtempSourceFilename, 'wb');
            $tempfile_open_error = ob_get_contents();
            ob_end_clean();
            if ($fp_tempfile) {
                fwrite($fp_tempfile, $this->rawImageData);
                fclose($fp_tempfile);
                $this->sourceFilename = $IMtempSourceFilename;
                $this->DebugMessage('ImageMagickThumbnailToGD() setting $this->sourceFilename to "' . $IMtempSourceFilename . '" from $this->rawImageData (' . strlen($this->rawImageData) . ' bytes)', __FILE__, __LINE__);
            } else {
                $this->DebugMessage('ImageMagickThumbnailToGD() FAILED setting $this->sourceFilename to "' . $IMtempSourceFilename . '" (failed to open for writing: "' . $tempfile_open_error . '")', __FILE__, __LINE__);
            }
            unset($tempfile_open_error, $IMtempSourceFilename);
            return true;
        }
        $this->DebugMessage('SourceDataToTempFile() FAILED because $this->phpThumb_tempnam() failed', __FILE__, __LINE__);
        return false;
    }

    function ImageMagickThumbnailToGD() {
        // http://www.imagemagick.org/script/command-line-options.php

        $this->useRawIMoutput = true;
        if (phpthumb_functions::gd_version()) {
            // if GD is not available, must use whatever ImageMagick can output
            // $UnAllowedParameters contains options that can only be processed in GD, not ImageMagick
            // note: 'fltr' *may* need to be processed by GD, but we'll check that in more detail below
            $UnAllowedParameters = array('xto', 'ar', 'bg', 'bc');
            // 'ra' may be part of this list, if not a multiple of 90�
            foreach ($UnAllowedParameters as $parameter) {
                if (isset($this->$parameter)) {
                    $this->DebugMessage('$this->useRawIMoutput=false because "' . $parameter . '" is set', __FILE__, __LINE__);
                    $this->useRawIMoutput = false;
                    break;
                }
            }
        }
        $this->DebugMessage('$this->useRawIMoutput=' . ($this->useRawIMoutput ? 'true' : 'false') . ' after checking $UnAllowedParameters', __FILE__, __LINE__);
        $outputFormat = $this->thumbnailFormat;
        if (phpthumb_functions::gd_version()) {
            if ($this->useRawIMoutput) {
                switch ($this->thumbnailFormat) {
                    case 'gif':
                        $ImageCreateFunction = 'ImageCreateFromGIF';
                        $this->is_alpha = true;
                        break;
                    case 'png':
                        $ImageCreateFunction = 'ImageCreateFromPNG';
                        $this->is_alpha = true;
                        break;
                    case 'jpg':
                    case 'jpeg':
                        $ImageCreateFunction = 'ImageCreateFromJPEG';
                        break;
                    default:
                        $this->DebugMessage('Forcing output to PNG because $this->thumbnailFormat (' . $this->thumbnailFormat . ' is not a GD-supported format)', __FILE__, __LINE__);
                        $outputFormat = 'png';
                        $ImageCreateFunction = 'ImageCreateFromPNG';
                        $this->is_alpha = true;
                        $this->useRawIMoutput = false;
                        break;
                }
                if (!function_exists(@$ImageCreateFunction)) {
                    // ImageMagickThumbnailToGD() depends on ImageCreateFromPNG/ImageCreateFromGIF
                    //$this->DebugMessage('ImageMagickThumbnailToGD() aborting because '.@$ImageCreateFunction.'() is not available', __FILE__, __LINE__);
                    $this->useRawIMoutput = true;
                    //return false;
                }
            } else {
                $outputFormat = 'png';
                $ImageCreateFunction = 'ImageCreateFromPNG';
                $this->is_alpha = true;
                $this->useRawIMoutput = false;
            }
        }

        // http://freealter.org/doc_distrib/ImageMagick-5.1.1/www/convert.html
        if (!$this->sourceFilename && $this->rawImageData) {
            $this->SourceDataToTempFile();
        }
        if (!$this->sourceFilename) {
            $this->DebugMessage('ImageMagickThumbnailToGD() aborting because $this->sourceFilename is empty', __FILE__, __LINE__);
            $this->useRawIMoutput = false;
            return false;
        }
        if ($this->issafemode) {
            $this->DebugMessage('ImageMagickThumbnailToGD() aborting because safe_mode is enabled', __FILE__, __LINE__);
            $this->useRawIMoutput = false;
            return false;
        }
// TO BE FIXED
//if (true) {
//	$this->DebugMessage('ImageMagickThumbnailToGD() aborting it is broken right now', __FILE__, __LINE__);
//	$this->useRawIMoutput = false;
//	return false;
//}

        $commandline = $this->ImageMagickCommandlineBase();
        if ($commandline) {
            if ($IMtempfilename = $this->phpThumb_tempnam()) {
                $IMtempfilename = realpath($IMtempfilename);

                $IMuseExplicitImageOutputDimensions = false;
                if ($this->ImageMagickSwitchAvailable('thumbnail') && $this->config_imagemagick_use_thumbnail) {
                    $IMresizeParameter = 'thumbnail';
                } else {
                    $IMresizeParameter = 'resize';

                    // some (older? around 2002) versions of IM won't accept "-resize 100x" but require "-resize 100x100"
                    $commandline_test = $this->ImageMagickCommandlineBase() . ' logo: -resize 1x ' . escapeshellarg($IMtempfilename) . ' 2>&1';
                    $IMresult_test = phpthumb_functions::SafeExec($commandline_test);
                    $IMuseExplicitImageOutputDimensions = preg_match('#image dimensions are zero#i', $IMresult_test);
                    $this->DebugMessage('IMuseExplicitImageOutputDimensions = ' . intval($IMuseExplicitImageOutputDimensions), __FILE__, __LINE__);
                    if ($fp_im_temp = @fopen($IMtempfilename, 'wb')) {
                        // erase temp image so ImageMagick logo doesn't get output if other processing fails
                        fclose($fp_im_temp);
                    }
                }


                if (!is_null($this->dpi) && $this->ImageMagickSwitchAvailable('density')) {
                    // for raster source formats only (WMF, PDF, etc)
                    $commandline .= ' -density ' . escapeshellarg($this->dpi);
                }
                ob_start();
                $getimagesize = GetImageSize($this->sourceFilename);
                $GetImageSizeError = ob_get_contents();
                ob_end_clean();
                if (is_array($getimagesize)) {
                    $this->DebugMessage('GetImageSize(' . $this->sourceFilename . ') SUCCEEDED: ' . print_r($getimagesize, true), __FILE__, __LINE__);
                } else {
                    $this->DebugMessage('GetImageSize(' . $this->sourceFilename . ') FAILED with error "' . $GetImageSizeError . '"', __FILE__, __LINE__);
                }
                if (is_array($getimagesize)) {
                    $this->DebugMessage('GetImageSize(' . $this->sourceFilename . ') returned [w=' . $getimagesize[0] . ';h=' . $getimagesize[1] . ';f=' . $getimagesize[2] . ']', __FILE__, __LINE__);
                    $this->source_width = $getimagesize[0];
                    $this->source_height = $getimagesize[1];
                    $this->DebugMessage('source dimensions set to ' . $this->source_width . 'x' . $this->source_height, __FILE__, __LINE__);
                    $this->SetOrientationDependantWidthHeight();

                    if (!preg_match('#(' . implode('|', $this->AlphaCapableFormats) . ')#i', $outputFormat)) {
                        // not a transparency-capable format
                        $commandline .= ' -background ' . escapeshellarg('#' . ($this->bg ? $this->bg : 'FFFFFF'));
                        if ($getimagesize[2] == IMAGETYPE_GIF) {
                            $commandline .= ' -flatten';
                        }
                    }
                    if ($getimagesize[2] == IMAGETYPE_GIF) {
                        $commandline .= ' -coalesce'; // may be needed for animated GIFs
                    }
                    if ($this->source_width || $this->source_height) {
                        if ($this->zc) {

                            $borderThickness = 0;
                            if (!empty($this->fltr)) {
                                foreach ($this->fltr as $key => $value) {
                                    if (preg_match('#^bord\|([0-9]+)#', $value, $matches)) {
                                        $borderThickness = $matches[1];
                                        break;
                                    }
                                }
                            }
                            $wAll = intval(max($this->w, $this->wp, $this->wl, $this->ws)) - (2 * $borderThickness);
                            $hAll = intval(max($this->h, $this->hp, $this->hl, $this->hs)) - (2 * $borderThickness);
                            $imAR = $this->source_width / $this->source_height;
                            $zcAR = (($wAll && $hAll) ? $wAll / $hAll : 1);
                            $side = phpthumb_functions::nonempty_min($this->source_width, $this->source_height, max($wAll, $hAll));
                            $sideX = phpthumb_functions::nonempty_min($this->source_width, $wAll, round($hAll * $zcAR));
                            $sideY = phpthumb_functions::nonempty_min($this->source_height, $hAll, round($wAll / $zcAR));

                            $thumbnailH = round(max($sideY, ($sideY * $zcAR) / $imAR));
                            $commandline .= ' -' . $IMresizeParameter . ' ' . escapeshellarg(($IMuseExplicitImageOutputDimensions ? $thumbnailH : '') . 'x' . $thumbnailH);

                            switch (strtoupper($this->zc)) {
                                case 'T':
                                    $commandline .= ' -gravity north';
                                    break;
                                case 'B':
                                    $commandline .= ' -gravity south';
                                    break;
                                case 'L':
                                    $commandline .= ' -gravity west';
                                    break;
                                case 'R':
                                    $commandline .= ' -gravity east';
                                    break;
                                case 'TL':
                                    $commandline .= ' -gravity northwest';
                                    break;
                                case 'TR':
                                    $commandline .= ' -gravity northeast';
                                    break;
                                case 'BL':
                                    $commandline .= ' -gravity southwest';
                                    break;
                                case 'BR':
                                    $commandline .= ' -gravity southeast';
                                    break;
                                case '1':
                                case 'C':
                                default:
                                    $commandline .= ' -gravity center';
                                    break;
                            }

                            if (($wAll > 0) && ($hAll > 0)) {
                                $commandline .= ' -crop ' . escapeshellarg($wAll . 'x' . $hAll . '+0+0');
                            } else {
                                $commandline .= ' -crop ' . escapeshellarg($side . 'x' . $side . '+0+0');
                            }
                            if ($this->ImageMagickSwitchAvailable('repage')) {
                                $commandline .= ' +repage';
                            } else {
                                $this->DebugMessage('Skipping "+repage" because ImageMagick (v' . $this->ImageMagickVersion() . ') does not support it', __FILE__, __LINE__);
                            }
                        } elseif ($this->sw || $this->sh || $this->sx || $this->sy) {

                            $crop_param = '';
                            $crop_param .= ($this->sw ? (($this->sw < 2) ? round($this->sw * $this->source_width) : $this->sw) : $this->source_width);
                            $crop_param .= 'x' . ($this->sh ? (($this->sh < 2) ? round($this->sh * $this->source_height) : $this->sh) : $this->source_height);
                            $crop_param .= '+' . (($this->sx < 2) ? round($this->sx * $this->source_width) : $this->sx);
                            $crop_param .= '+' . (($this->sy < 2) ? round($this->sy * $this->source_height) : $this->sy);
// TO BE FIXED
// makes 1x1 output
// http://trainspotted.com/phpThumb/phpThumb.php?src=/content/CNR/47/CNR-4728-LD-L-20110723-898.jpg&w=100&h=100&far=1&f=png&fltr[]=lvl&sx=0.05&sy=0.25&sw=0.92&sh=0.42
// '/usr/bin/convert' -density 150 -thumbnail 100x100 -contrast-stretch '0.1%' '/var/www/vhosts/trainspotted.com/httpdocs/content/CNR/47/CNR-4728-LD-L-20110723-898.jpg[0]' png:'/var/www/vhosts/trainspotted.com/httpdocs/phpThumb/_cache/pThumbIIUlvj'
//							$commandline .= ' -crop '.escapeshellarg($crop_param);
                            // this is broken for aoe=1, but unsure how to fix. Send advice to info@silisoftware.com
                            if ($this->w || $this->h) {
                                //if ($this->ImageMagickSwitchAvailable('repage')) {
                                if (false) {
// TO BE FIXED
// newer versions of ImageMagick require -repage <geometry>
                                    $commandline .= ' -repage';
                                } else {
                                    $this->DebugMessage('Skipping "-repage" because ImageMagick (v' . $this->ImageMagickVersion() . ') does not support it', __FILE__, __LINE__);
                                }
                                if ($IMuseExplicitImageOutputDimensions) {
                                    if ($this->w && !$this->h) {
                                        $this->h = ceil($this->w / ($this->source_width / $this->source_height));
                                    } elseif ($this->h && !$this->w) {
                                        $this->w = ceil($this->h * ($this->source_width / $this->source_height));
                                    }
                                }
                                $commandline .= ' -' . $IMresizeParameter . ' ' . escapeshellarg($this->w . 'x' . $this->h);
                            }
                        } else {

                            if ($this->iar && (intval($this->w) > 0) && (intval($this->h) > 0)) {
                                list($nw, $nh) = phpthumb_functions::TranslateWHbyAngle($this->w, $this->h, $this->ra);
                                $nw = ((round($nw) != 0) ? round($nw) : '');
                                $nh = ((round($nh) != 0) ? round($nh) : '');
                                $commandline .= ' -' . $IMresizeParameter . ' ' . escapeshellarg($nw . 'x' . $nh . '!');
                            } else {
                                $this->w = ((($this->aoe || $this->far) && $this->w) ? $this->w : ($this->w ? phpthumb_functions::nonempty_min($this->w, $getimagesize[0]) : ''));
                                $this->h = ((($this->aoe || $this->far) && $this->h) ? $this->h : ($this->h ? phpthumb_functions::nonempty_min($this->h, $getimagesize[1]) : ''));
                                if ($this->w || $this->h) {
                                    if ($IMuseExplicitImageOutputDimensions) {
                                        if ($this->w && !$this->h) {
                                            $this->h = ceil($this->w / ($this->source_width / $this->source_height));
                                        } elseif ($this->h && !$this->w) {
                                            $this->w = ceil($this->h * ($this->source_width / $this->source_height));
                                        }
                                    }
                                    list($nw, $nh) = phpthumb_functions::TranslateWHbyAngle($this->w, $this->h, $this->ra);
                                    $nw = ((round($nw) != 0) ? round($nw) : '');
                                    $nh = ((round($nh) != 0) ? round($nh) : '');
                                    $commandline .= ' -' . $IMresizeParameter . ' ' . escapeshellarg($nw . 'x' . $nh);
                                }
                            }
                        }
                    }
                } else {

                    $this->DebugMessage('GetImageSize(' . $this->sourceFilename . ') failed', __FILE__, __LINE__);
                    if ($this->w || $this->h) {
                        $exactDimensionsBang = (($this->iar && (intval($this->w) > 0) && (intval($this->h) > 0)) ? '!' : '');
                        if ($IMuseExplicitImageOutputDimensions) {
                            // unknown source aspect ratio, just put large number and hope IM figures it out
                            $commandline .= ' -' . $IMresizeParameter . ' ' . escapeshellarg(($this->w ? $this->w : '9999') . 'x' . ($this->h ? $this->h : '9999') . $exactDimensionsBang);
                        } else {
                            $commandline .= ' -' . $IMresizeParameter . ' ' . escapeshellarg($this->w . 'x' . $this->h . $exactDimensionsBang);
                        }
                    }
                }

                if ($this->ra) {
                    $this->ra = intval($this->ra);
                    if ($this->ImageMagickSwitchAvailable('rotate')) {
                        if (!preg_match('#(' . implode('|', $this->AlphaCapableFormats) . ')#i', $outputFormat) || phpthumb_functions::version_compare_replacement($this->ImageMagickVersion(), '6.3.7', '>=')) {
                            $this->DebugMessage('Using ImageMagick rotate', __FILE__, __LINE__);
                            $commandline .= ' -rotate ' . escapeshellarg($this->ra);
                            if (($this->ra % 90) != 0) {
                                if (preg_match('#(' . implode('|', $this->AlphaCapableFormats) . ')#i', $outputFormat)) {
                                    // alpha-capable format
                                    $commandline .= ' -background rgba(255,255,255,0)';
                                } else {
                                    $commandline .= ' -background ' . escapeshellarg('#' . ($this->bg ? $this->bg : 'FFFFFF'));
                                }
                            }
                            $this->ra = 0;
                        } else {
                            $this->DebugMessage('Not using ImageMagick rotate because alpha background buggy before v6.3.7', __FILE__, __LINE__);
                        }
                    } else {
                        $this->DebugMessage('Not using ImageMagick rotate because not supported', __FILE__, __LINE__);
                    }
                }

                $successfullyProcessedFilters = array();
                foreach ($this->fltr as $filterkey => $filtercommand) {
                    @list($command, $parameter) = explode('|', $filtercommand, 2);
                    switch ($command) {
                        case 'brit':
                            if ($this->ImageMagickSwitchAvailable('modulate')) {
                                $commandline .= ' -modulate ' . escapeshellarg((100 + intval($parameter)) . ',100,100');
                                $successfullyProcessedFilters[] = $filterkey;
                            }
                            break;

                        case 'cont':
                            if ($this->ImageMagickSwitchAvailable('contrast')) {
                                $contDiv10 = round(intval($parameter) / 10);
                                if ($contDiv10 > 0) {
                                    $contDiv10 = min($contDiv10, 100);
                                    for ($i = 0; $i < $contDiv10; $i++) {
                                        $commandline .= ' -contrast'; // increase contrast by 10%
                                    }
                                } elseif ($contDiv10 < 0) {
                                    $contDiv10 = max($contDiv10, -100);
                                    for ($i = $contDiv10; $i < 0; $i++) {
                                        $commandline .= ' +contrast'; // decrease contrast by 10%
                                    }
                                } else {
                                    // do nothing
                                }
                                $successfullyProcessedFilters[] = $filterkey;
                            }
                            break;

                        case 'ds':
                            if ($this->ImageMagickSwitchAvailable(array('colorspace', 'modulate'))) {
                                if ($parameter == 100) {
                                    $commandline .= ' -colorspace GRAY';
                                    $commandline .= ' -modulate 100,0,100';
                                } else {
                                    $commandline .= ' -modulate ' . escapeshellarg('100,' . (100 - intval($parameter)) . ',100');
                                }
                                $successfullyProcessedFilters[] = $filterkey;
                            }
                            break;

                        case 'sat':
                            if ($this->ImageMagickSwitchAvailable(array('colorspace', 'modulate'))) {
                                if ($parameter == -100) {
                                    $commandline .= ' -colorspace GRAY';
                                    $commandline .= ' -modulate 100,0,100';
                                } else {
                                    $commandline .= ' -modulate ' . escapeshellarg('100,' . (100 + intval($parameter)) . ',100');
                                }
                                $successfullyProcessedFilters[] = $filterkey;
                            }
                            break;

                        case 'gray':
                            if ($this->ImageMagickSwitchAvailable(array('colorspace', 'modulate'))) {
                                $commandline .= ' -colorspace GRAY';
                                $commandline .= ' -modulate 100,0,100';
                                $successfullyProcessedFilters[] = $filterkey;
                            }
                            break;

                        case 'clr':
                            if ($this->ImageMagickSwitchAvailable(array('fill', 'colorize'))) {
                                @list($amount, $color) = explode('|', $parameter);
                                $commandline .= ' -fill ' . escapeshellarg('#' . preg_replace('#[^0-9A-F]#i', '', $color));
                                $commandline .= ' -colorize ' . escapeshellarg(min(max(intval($amount), 0), 100));
                            }
                            break;

                        case 'sep':
                            if ($this->ImageMagickSwitchAvailable('sepia-tone')) {
                                @list($amount, $color) = explode('|', $parameter);
                                $amount = ($amount ? $amount : 80);
                                if (!$color) {
                                    $commandline .= ' -sepia-tone ' . escapeshellarg(min(max(intval($amount), 0), 100) . '%');
                                    $successfullyProcessedFilters[] = $filterkey;
                                }
                            }
                            break;

                        case 'gam':
                            @list($amount) = explode('|', $parameter);
                            $amount = min(max(floatval($amount), 0.001), 10);
                            if (number_format($amount, 3) != '1.000') {
                                if ($this->ImageMagickSwitchAvailable('gamma')) {
                                    $commandline .= ' -gamma ' . escapeshellarg($amount);
                                    $successfullyProcessedFilters[] = $filterkey;
                                }
                            }
                            break;

                        case 'neg':
                            if ($this->ImageMagickSwitchAvailable('negate')) {
                                $commandline .= ' -negate';
                                $successfullyProcessedFilters[] = $filterkey;
                            }
                            break;

                        case 'th':
                            @list($amount) = explode('|', $parameter);
                            if ($this->ImageMagickSwitchAvailable(array('threshold', 'dither', 'monochrome'))) {
                                $commandline .= ' -threshold ' . escapeshellarg(round(min(max(intval($amount), 0), 255) / 2.55) . '%');
                                $commandline .= ' -dither';
                                $commandline .= ' -monochrome';
                                $successfullyProcessedFilters[] = $filterkey;
                            }
                            break;

                        case 'rcd':
                            if ($this->ImageMagickSwitchAvailable(array('colors', 'dither'))) {
                                @list($colors, $dither) = explode('|', $parameter);
                                $colors = ($colors ? (int) $colors : 256);
                                $dither = ((strlen($dither) > 0) ? (bool) $dither : true);
                                $commandline .= ' -colors ' . escapeshellarg(max($colors, 8)); // ImageMagick will otherwise fail with "cannot quantize to fewer than 8 colors"
                                $commandline .= ($dither ? ' -dither' : ' +dither');
                                $successfullyProcessedFilters[] = $filterkey;
                            }
                            break;

                        case 'flip':
                            if ($this->ImageMagickSwitchAvailable(array('flip', 'flop'))) {
                                if (strpos(strtolower($parameter), 'x') !== false) {
                                    $commandline .= ' -flop';
                                }
                                if (strpos(strtolower($parameter), 'y') !== false) {
                                    $commandline .= ' -flip';
                                }
                                $successfullyProcessedFilters[] = $filterkey;
                            }
                            break;

                        case 'edge':
                            if ($this->ImageMagickSwitchAvailable('edge')) {
                                $parameter = (!empty($parameter) ? $parameter : 2);
                                $commandline .= ' -edge ' . escapeshellarg(!empty($parameter) ? intval($parameter) : 1);
                                $successfullyProcessedFilters[] = $filterkey;
                            }
                            break;

                        case 'emb':
                            if ($this->ImageMagickSwitchAvailable(array('emboss', 'negate'))) {
                                $parameter = (!empty($parameter) ? $parameter : 2);
                                $commandline .= ' -emboss ' . escapeshellarg(intval($parameter));
                                if ($parameter < 2) {
                                    $commandline .= ' -negate'; // ImageMagick negates the image for some reason with '-emboss 1';
                                }
                                $successfullyProcessedFilters[] = $filterkey;
                            }
                            break;

                        case 'lvl':
                            @list($band, $method, $threshold) = explode('|', $parameter);
                            $band = ($band ? preg_replace('#[^RGBA\\*]#', '', strtoupper($band)) : '*');
                            $method = ((strlen($method) > 0) ? intval($method) : 2);
                            $threshold = ((strlen($threshold) > 0) ? min(max(floatval($threshold), 0), 100) : 0.1);

                            $band = preg_replace('#[^RGBA\\*]#', '', strtoupper($band));

                            if (($method > 1) && !$this->ImageMagickSwitchAvailable(array('channel', 'contrast-stretch'))) {
                                // Because ImageMagick processing happens before PHP-GD filters, and because some
                                // clipping is involved in the "lvl" filter, if "lvl" happens before "wb" then the
                                // "wb" filter will have (almost) no effect. Therefore, if "wb" is enabled then
                                // force the "lvl" filter to be processed by GD, not ImageMagick.
                                foreach ($this->fltr as $fltr_key => $fltr_value) {
                                    list($fltr_cmd) = explode('|', $fltr_value);
                                    if ($fltr_cmd == 'wb') {
                                        $this->DebugMessage('Setting "lvl" filter method to "0" (from "' . $method . '") because white-balance filter also enabled', __FILE__, __LINE__);
                                        $method = 0;
                                    }
                                }
                            }

                            switch ($method) {
                                case 0: // internal RGB
                                case 1: // internal grayscale
                                    break;
                                case 2: // ImageMagick "contrast-stretch"
                                    if ($this->ImageMagickSwitchAvailable('contrast-stretch')) {
                                        if ($band != '*') {
                                            $commandline .= ' -channel ' . escapeshellarg(strtoupper($band));
                                        }
                                        $threshold = preg_replace('#[^0-9\\.]#', '', $threshold); // should be unneccesary, but just to be double-sure
                                        //$commandline .= ' -contrast-stretch '.escapeshellarg($threshold.'%');
                                        $commandline .= ' -contrast-stretch \'' . $threshold . '%\'';
                                        if ($band != '*') {
                                            $commandline .= ' +channel';
                                        }
                                        $successfullyProcessedFilters[] = $filterkey;
                                    }
                                    break;
                                case 3: // ImageMagick "normalize"
                                    if ($this->ImageMagickSwitchAvailable('normalize')) {
                                        if ($band != '*') {
                                            $commandline .= ' -channel ' . escapeshellarg(strtoupper($band));
                                        }
                                        $commandline .= ' -normalize';
                                        if ($band != '*') {
                                            $commandline .= ' +channel';
                                        }
                                        $successfullyProcessedFilters[] = $filterkey;
                                    }
                                    break;
                                default:
                                    $this->DebugMessage('unsupported method (' . $method . ') for "lvl" filter', __FILE__, __LINE__);
                                    break;
                            }
                            if (isset($this->fltr[$filterkey]) && ($method > 1)) {
                                $this->fltr[$filterkey] = $command . '|' . $band . '|0|' . $threshold;
                                $this->DebugMessage('filter "lvl" remapped from method "' . $method . '" to method "0" because ImageMagick support is missing', __FILE__, __LINE__);
                            }
                            break;

                        case 'wb':
                            if ($this->ImageMagickSwitchAvailable(array('channel', 'contrast-stretch'))) {
                                @list($threshold) = explode('|', $parameter);
                                $threshold = (!empty($threshold) ? min(max(floatval($threshold), 0), 100) : 0.1);
                                $threshold = preg_replace('#[^0-9\\.]#', '', $threshold); // should be unneccesary, but just to be double-sure
                                //$commandline .= ' -channel R -contrast-stretch '.escapeshellarg($threshold.'%'); // doesn't work on Windows because most versions of PHP do not properly
                                //$commandline .= ' -channel G -contrast-stretch '.escapeshellarg($threshold.'%'); // escape special characters (such as %) and just replace them with spaces
                                //$commandline .= ' -channel B -contrast-stretch '.escapeshellarg($threshold.'%'); // https://bugs.php.net/bug.php?id=43261
                                $commandline .= ' -channel R -contrast-stretch \'' . $threshold . '%\'';
                                $commandline .= ' -channel G -contrast-stretch \'' . $threshold . '%\'';
                                $commandline .= ' -channel B -contrast-stretch \'' . $threshold . '%\'';
                                $commandline .= ' +channel';
                                $successfullyProcessedFilters[] = $filterkey;
                            }
                            break;

                        case 'blur':
                            if ($this->ImageMagickSwitchAvailable('blur')) {
                                @list($radius) = explode('|', $parameter);
                                $radius = (!empty($radius) ? min(max(intval($radius), 0), 25) : 1);
                                $commandline .= ' -blur ' . escapeshellarg($radius);
                                $successfullyProcessedFilters[] = $filterkey;
                            }
                            break;

                        case 'gblr':
                            @list($radius) = explode('|', $parameter);
                            $radius = (!empty($radius) ? min(max(intval($radius), 0), 25) : 1);
                            // "-gaussian" changed to "-gaussian-blur" sometime around 2009
                            if ($this->ImageMagickSwitchAvailable('gaussian-blur')) {
                                $commandline .= ' -gaussian-blur ' . escapeshellarg($radius);
                                $successfullyProcessedFilters[] = $filterkey;
                            } elseif ($this->ImageMagickSwitchAvailable('gaussian')) {
                                $commandline .= ' -gaussian ' . escapeshellarg($radius);
                                $successfullyProcessedFilters[] = $filterkey;
                            }
                            break;

                        case 'usm':
                            if ($this->ImageMagickSwitchAvailable('unsharp')) {
                                @list($amount, $radius, $threshold) = explode('|', $parameter);
                                $amount = ($amount ? min(max(intval($radius), 0), 255) : 80);
                                $radius = ($radius ? min(max(intval($radius), 0), 10) : 0.5);
                                $threshold = (strlen($threshold) ? min(max(intval($radius), 0), 50) : 3);
                                $commandline .= ' -unsharp ' . escapeshellarg(number_format(($radius * 2) - 1, 2, '.', '') . 'x1+' . number_format($amount / 100, 2, '.', '') . '+' . number_format($threshold / 100, 2, '.', ''));
                                $successfullyProcessedFilters[] = $filterkey;
                            }
                            break;

                        case 'bord':
                            if ($this->ImageMagickSwitchAvailable(array('border', 'bordercolor', 'thumbnail', 'crop'))) {
                                if (!$this->zc) {
                                    @list($width, $rX, $rY, $color) = explode('|', $parameter);
                                    $width = intval($width);
                                    $rX = intval($rX);
                                    $rY = intval($rY);
                                    if ($width && !$rX && !$rY) {
                                        if (!phpthumb_functions::IsHexColor($color)) {
                                            $color = ((!empty($this->bc) && phpthumb_functions::IsHexColor($this->bc)) ? $this->bc : '000000');
                                        }
                                        $commandline .= ' -border ' . escapeshellarg(intval($width));
                                        $commandline .= ' -bordercolor ' . escapeshellarg('#' . $color);

                                        if (preg_match('# \\-crop "([0-9]+)x([0-9]+)\\+0\\+0" #', $commandline, $matches)) {
                                            $commandline = str_replace(' -crop "' . $matches[1] . 'x' . $matches[2] . '+0+0" ', ' -crop ' . escapeshellarg(($matches[1] - (2 * $width)) . 'x' . ($matches[2] - (2 * $width)) . '+0+0') . ' ', $commandline);
                                        } elseif (preg_match('# \\-' . $IMresizeParameter . ' "([0-9]+)x([0-9]+)" #', $commandline, $matches)) {
                                            $commandline = str_replace(' -' . $IMresizeParameter . ' "' . $matches[1] . 'x' . $matches[2] . '" ', ' -' . $IMresizeParameter . ' ' . escapeshellarg(($matches[1] - (2 * $width)) . 'x' . ($matches[2] - (2 * $width))) . ' ', $commandline);
                                        }
                                        $successfullyProcessedFilters[] = $filterkey;
                                    }
                                }
                            }
                            break;

                        case 'crop':
                            break;

                        case 'sblr':
                            break;

                        case 'mean':
                            break;

                        case 'smth':
                            break;

                        case 'bvl':
                            break;

                        case 'wmi':
                            break;

                        case 'wmt':
                            break;

                        case 'over':
                            break;

                        case 'hist':
                            break;

                        case 'fram':
                            break;

                        case 'drop':
                            break;

                        case 'mask':
                            break;

                        case 'elip':
                            break;

                        case 'ric':
                            break;

                        case 'stc':
                            break;

                        case 'size':
                            break;

                        default:
                            $this->DebugMessage('Unknown $this->fltr[' . $filterkey . '] (' . $filtercommand . ') -- deleting filter command', __FILE__, __LINE__);
                            $successfullyProcessedFilters[] = $filterkey;
                            break;
                    }
                    if (!isset($this->fltr[$filterkey])) {
                        $this->DebugMessage('Processed $this->fltr[' . $filterkey . '] (' . $filtercommand . ') with ImageMagick', __FILE__, __LINE__);
                    } else {
                        $this->DebugMessage('Skipping $this->fltr[' . $filterkey . '] (' . $filtercommand . ') with ImageMagick', __FILE__, __LINE__);
                    }
                }
                $this->DebugMessage('Remaining $this->fltr after ImageMagick: (' . $this->phpThumbDebugVarDump($this->fltr) . ')', __FILE__, __LINE__);
                if (count($this->fltr) > 0) {
                    $this->useRawIMoutput = false;
                }

                if (preg_match('#jpe?g#i', $outputFormat) && $this->q) {
                    if ($this->ImageMagickSwitchAvailable(array('quality', 'interlace'))) {
                        $commandline .= ' -quality ' . escapeshellarg($this->thumbnailQuality);
                        if ($this->config_output_interlace) {
                            // causes weird things with animated GIF... leave for JPEG only
                            $commandline .= ' -interlace line '; // Use Line or Plane to create an interlaced PNG or GIF or progressive JPEG image
                        }
                    }
                }
                $commandline .= ' ' . escapeshellarg(preg_replace('#[/\\\\]#', DIRECTORY_SEPARATOR, $this->sourceFilename) . (($outputFormat == 'gif') ? '' : '[' . intval($this->sfn) . ']')); // [0] means first frame of (GIF) animation, can be ignored
                $commandline .= ' ' . $outputFormat . ':' . escapeshellarg($IMtempfilename);
                if (!$this->iswindows) {
                    $commandline .= ' 2>&1';
                }
                $this->DebugMessage('ImageMagick called as (' . $commandline . ')', __FILE__, __LINE__);
                $IMresult = phpthumb_functions::SafeExec($commandline);
                clearstatcache();
                if (!@file_exists($IMtempfilename) || !@filesize($IMtempfilename)) {
                    $this->FatalError('ImageMagick failed with message (' . trim($IMresult) . ')');
                    $this->DebugMessage('ImageMagick failed with message (' . trim($IMresult) . ')', __FILE__, __LINE__);
                    if ($this->iswindows && !$IMresult) {
                        $this->DebugMessage('Check to make sure that PHP has read+write permissions to "' . dirname($IMtempfilename) . '"', __FILE__, __LINE__);
                    }
                } else {

                    foreach ($successfullyProcessedFilters as $dummy => $filterkey) {
                        unset($this->fltr[$filterkey]);
                    }
                    $this->IMresizedData = file_get_contents($IMtempfilename);
                    $getimagesize_imresized = @GetImageSize($IMtempfilename);
                    $this->DebugMessage('GetImageSize(' . $IMtempfilename . ') returned [w=' . $getimagesize_imresized[0] . ';h=' . $getimagesize_imresized[1] . ';f=' . $getimagesize_imresized[2] . ']', __FILE__, __LINE__);
                    if (($this->config_max_source_pixels > 0) && (($getimagesize_imresized[0] * $getimagesize_imresized[1]) > $this->config_max_source_pixels)) {
                        $this->DebugMessage('skipping ImageMagickThumbnailToGD::' . $ImageCreateFunction . '() because IM output is too large (' . $getimagesize_imresized[0] . 'x' . $getimagesize_imresized[0] . ' = ' . ($getimagesize_imresized[0] * $getimagesize_imresized[1]) . ' > ' . $this->config_max_source_pixels . ')', __FILE__, __LINE__);
                    } elseif (function_exists(@$ImageCreateFunction) && ($this->gdimg_source = @$ImageCreateFunction($IMtempfilename))) {
                        $this->source_width = ImageSX($this->gdimg_source);
                        $this->source_height = ImageSY($this->gdimg_source);
                        $this->DebugMessage('ImageMagickThumbnailToGD::' . $ImageCreateFunction . '() succeeded, $this->gdimg_source is now (' . $this->source_width . 'x' . $this->source_height . ')', __FILE__, __LINE__);
                        $this->DebugMessage('ImageMagickThumbnailToGD() returning $this->IMresizedData (' . strlen($this->IMresizedData) . ' bytes)', __FILE__, __LINE__);
                    } else {
                        $this->useRawIMoutput = true;
                        $this->DebugMessage('$this->useRawIMoutput set to TRUE because ' . @$ImageCreateFunction . '(' . $IMtempfilename . ') failed', __FILE__, __LINE__);
                    }
                    return true;
                }
                if (file_exists($IMtempfilename)) {
                    $this->DebugMessage('deleting "' . $IMtempfilename . '"', __FILE__, __LINE__);
                    @unlink($IMtempfilename);
                }
            } elseif ($this->issafemode) {
                $this->DebugMessage('ImageMagickThumbnailToGD() aborting because PHP safe_mode is enabled and phpThumb_tempnam() failed', __FILE__, __LINE__);
                $this->useRawIMoutput = false;
            } else {
                if (file_exists($IMtempfilename)) {
                    $this->DebugMessage('deleting "' . $IMtempfilename . '"', __FILE__, __LINE__);
                    @unlink($IMtempfilename);
                }
                $this->DebugMessage('ImageMagickThumbnailToGD() aborting, phpThumb_tempnam() failed', __FILE__, __LINE__);
            }
        } else {
            $this->DebugMessage('ImageMagickThumbnailToGD() aborting because ImageMagickCommandlineBase() failed', __FILE__, __LINE__);
        }
        $this->useRawIMoutput = false;
        return false;
    }

    function Rotate() {
        if ($this->ra || $this->ar) {
            if (!function_exists('ImageRotate')) {
                $this->DebugMessage('!function_exists(ImageRotate)', __FILE__, __LINE__);
                return false;
            }
            if (!include_once(dirname(__FILE__) . '/phpthumb.filters.php')) {
                $this->DebugMessage('Error including "' . dirname(__FILE__) . '/phpthumb.filters.php" which is required for applying filters (' . implode(';', $this->fltr) . ')', __FILE__, __LINE__);
                return false;
            }

            $this->config_background_hexcolor = ($this->bg ? $this->bg : $this->config_background_hexcolor);
            if (!phpthumb_functions::IsHexColor($this->config_background_hexcolor)) {
                return $this->ErrorImage('Invalid hex color string "' . $this->config_background_hexcolor . '" for parameter "bg"');
            }

            $rotate_angle = 0;
            if ($this->ra) {

                $rotate_angle = floatval($this->ra);
            } else {

                if ($this->ar == 'x') {
                    if (phpthumb_functions::version_compare_replacement(phpversion(), '4.2.0', '>=')) {
                        if ($this->sourceFilename) {
                            if (function_exists('exif_read_data')) {
                                if ($exif_data = @exif_read_data($this->sourceFilename, 'IFD0')) {
                                    // http://sylvana.net/jpegcrop/exif_orientation.html
                                    switch (@$exif_data['Orientation']) {
                                        case 1:
                                            $rotate_angle = 0;
                                            break;
                                        case 3:
                                            $rotate_angle = 180;
                                            break;
                                        case 6:
                                            $rotate_angle = 270;
                                            break;
                                        case 8:
                                            $rotate_angle = 90;
                                            break;

                                        default:
                                            $this->DebugMessage('EXIF auto-rotate failed because unknown $exif_data[Orientation] "' . @$exif_data['Orientation'] . '"', __FILE__, __LINE__);
                                            return false;
                                            break;
                                    }
                                    $this->DebugMessage('EXIF auto-rotate set to ' . $rotate_angle . ' degrees ($exif_data[Orientation] = "' . @$exif_data['Orientation'] . '")', __FILE__, __LINE__);
                                } else {
                                    $this->DebugMessage('failed: exif_read_data(' . $this->sourceFilename . ')', __FILE__, __LINE__);
                                    return false;
                                }
                            } else {
                                $this->DebugMessage('!function_exists(exif_read_data)', __FILE__, __LINE__);
                                return false;
                            }
                        } else {
                            $this->DebugMessage('Cannot auto-rotate from EXIF data because $this->sourceFilename is empty', __FILE__, __LINE__);
                            return false;
                        }
                    } else {
                        $this->DebugMessage('Cannot auto-rotate from EXIF data because PHP is less than v4.2.0 (' . phpversion() . ')', __FILE__, __LINE__);
                        return false;
                    }
                } elseif (($this->ar == 'l') && ($this->source_height > $this->source_width)) {
                    $rotate_angle = 270;
                } elseif (($this->ar == 'L') && ($this->source_height > $this->source_width)) {
                    $rotate_angle = 90;
                } elseif (($this->ar == 'p') && ($this->source_width > $this->source_height)) {
                    $rotate_angle = 90;
                } elseif (($this->ar == 'P') && ($this->source_width > $this->source_height)) {
                    $rotate_angle = 270;
                }
            }
            if ($rotate_angle % 90) {
                $this->is_alpha = true;
            }
            phpthumb_filters::ImprovedImageRotate($this->gdimg_source, $rotate_angle, $this->config_background_hexcolor, $this->bg);
            $this->source_width = ImageSX($this->gdimg_source);
            $this->source_height = ImageSY($this->gdimg_source);
        }
        return true;
    }

    function FixedAspectRatio() {
        // optional fixed-dimension images (regardless of aspect ratio)

        if (!$this->far) {
            // do nothing
            return true;
        }

        if (!$this->w || !$this->h) {
            return false;
        }
        $this->thumbnail_width = $this->w;
        $this->thumbnail_height = $this->h;
        $this->is_alpha = true;
        if ($this->thumbnail_image_width >= $this->thumbnail_width) {

            if ($this->w) {
                $aspectratio = $this->thumbnail_image_height / $this->thumbnail_image_width;
                $this->thumbnail_image_height = round($this->thumbnail_image_width * $aspectratio);
                $this->thumbnail_height = ($this->h ? $this->h : $this->thumbnail_image_height);
            } elseif ($this->thumbnail_image_height < $this->thumbnail_height) {
                $this->thumbnail_image_height = $this->thumbnail_height;
                $this->thumbnail_image_width = round($this->thumbnail_image_height / $aspectratio);
            }
        } else {
            if ($this->h) {
                $aspectratio = $this->thumbnail_image_width / $this->thumbnail_image_height;
                $this->thumbnail_image_width = round($this->thumbnail_image_height * $aspectratio);
            } elseif ($this->thumbnail_image_width < $this->thumbnail_width) {
                $this->thumbnail_image_width = $this->thumbnail_width;
                $this->thumbnail_image_height = round($this->thumbnail_image_width / $aspectratio);
            }
        }
        return true;
    }

    function OffsiteDomainIsAllowed($hostname, $allowed_domains) {
        static $domain_is_allowed = array();
        $hostname = strtolower($hostname);
        if (!isset($domain_is_allowed[$hostname])) {
            $domain_is_allowed[$hostname] = false;
            foreach ($allowed_domains as $valid_domain) {
                $starpos = strpos($valid_domain, '*');
                if ($starpos !== false) {
                    $valid_domain = substr($valid_domain, $starpos + 1);
                    if (preg_match('#' . preg_quote($valid_domain) . '$#', $hostname)) {
                        $domain_is_allowed[$hostname] = true;
                        break;
                    }
                } else {
                    if (strtolower($valid_domain) === $hostname) {
                        $domain_is_allowed[$hostname] = true;
                        break;
                    }
                }
            }
        }
        return $domain_is_allowed[$hostname];
    }

    function AntiOffsiteLinking() {
        // Optional anti-offsite hijacking of the thumbnail script
        $allow = true;
        if ($allow && $this->config_nooffsitelink_enabled && (@$_SERVER['HTTP_REFERER'] || $this->config_nooffsitelink_require_refer)) {
            $this->DebugMessage('AntiOffsiteLinking() checking $_SERVER[HTTP_REFERER] "' . @$_SERVER['HTTP_REFERER'] . '"', __FILE__, __LINE__);
            foreach ($this->config_nooffsitelink_valid_domains as $key => $valid_domain) {
                // $_SERVER['HTTP_HOST'] contains the port number, so strip it out here to make default configuration work
                list($clean_domain) = explode(':', $valid_domain);
                $this->config_nooffsitelink_valid_domains[$key] = $clean_domain;
            }
            $parsed_url = phpthumb_functions::ParseURLbetter(@$_SERVER['HTTP_REFERER']);
            if (!$this->OffsiteDomainIsAllowed(@$parsed_url['host'], $this->config_nooffsitelink_valid_domains)) {
                $allow = false;
                $erase = $this->config_nooffsitelink_erase_image;
                $message = $this->config_nooffsitelink_text_message;
                $this->ErrorImage('AntiOffsiteLinking() - "' . @$parsed_url['host'] . '" is NOT in $this->config_nooffsitelink_valid_domains (' . implode(';', $this->config_nooffsitelink_valid_domains) . ')');
                exit;
                $this->DebugMessage('AntiOffsiteLinking() - "' . @$parsed_url['host'] . '" is NOT in $this->config_nooffsitelink_valid_domains (' . implode(';', $this->config_nooffsitelink_valid_domains) . ')', __FILE__, __LINE__);
            } else {
                $this->DebugMessage('AntiOffsiteLinking() - "' . @$parsed_url['host'] . '" is in $this->config_nooffsitelink_valid_domains (' . implode(';', $this->config_nooffsitelink_valid_domains) . ')', __FILE__, __LINE__);
            }
        }

        if ($allow && $this->config_nohotlink_enabled && preg_match('#^(f|ht)tps?\://#i', $this->src)) {
            $parsed_url = phpthumb_functions::ParseURLbetter($this->src);
            //if (!phpthumb_functions::CaseInsensitiveInArray(@$parsed_url['host'], $this->config_nohotlink_valid_domains)) {
            if ($this->OffsiteDomainIsAllowed(@$parsed_url['host'], $this->config_nohotlink_valid_domains)) {
                // This domain is not allowed
                $allow = false;
                $erase = $this->config_nohotlink_erase_image;
                $message = $this->config_nohotlink_text_message;
                $this->DebugMessage('AntiOffsiteLinking() - "' . $parsed_url['host'] . '" is NOT in $this->config_nohotlink_valid_domains (' . implode(';', $this->config_nohotlink_valid_domains) . ')', __FILE__, __LINE__);
            } else {
                $this->DebugMessage('AntiOffsiteLinking() - "' . $parsed_url['host'] . '" is in $this->config_nohotlink_valid_domains (' . implode(';', $this->config_nohotlink_valid_domains) . ')', __FILE__, __LINE__);
            }
        }

        if ($allow) {
            $this->DebugMessage('AntiOffsiteLinking() says this is allowed', __FILE__, __LINE__);
            return true;
        }

        if (!phpthumb_functions::IsHexColor($this->config_error_bgcolor)) {
            return $this->ErrorImage('Invalid hex color string "' . $this->config_error_bgcolor . '" for $this->config_error_bgcolor');
        }
        if (!phpthumb_functions::IsHexColor($this->config_error_textcolor)) {
            return $this->ErrorImage('Invalid hex color string "' . $this->config_error_textcolor . '" for $this->config_error_textcolor');
        }
        if ($erase) {

            return $this->ErrorImage($message, $this->thumbnail_width, $this->thumbnail_height, $this->config_error_bgcolor, $this->config_error_textcolor, $this->config_error_fontsize);
        } else {

            $this->config_nooffsitelink_watermark_src = $this->ResolveFilenameToAbsolute($this->config_nooffsitelink_watermark_src);
            if (is_file($this->config_nooffsitelink_watermark_src)) {

                if (!include_once(dirname(__FILE__) . '/phpthumb.filters.php')) {
                    $this->DebugMessage('Error including "' . dirname(__FILE__) . '/phpthumb.filters.php" which is required for applying watermark', __FILE__, __LINE__);
                    return false;
                }
                $watermark_img = $this->ImageCreateFromStringReplacement(file_get_contents($this->config_nooffsitelink_watermark_src));
                $phpthumbFilters = new phpthumb_filters();
                $phpthumbFilters->phpThumbObject = &$this;
                $opacity = 50;
                $margin = 5;
                $phpthumbFilters->WatermarkOverlay($this->gdimg_output, $watermark_img, '*', $opacity, $margin);
                ImageDestroy($watermark_img);
                unset($phpthumbFilters);
            } else {

                $nohotlink_text_array = explode("\n", wordwrap($message, floor($this->thumbnail_width / ImageFontWidth($this->config_error_fontsize)), "\n"));
                $nohotlink_text_color = phpthumb_functions::ImageHexColorAllocate($this->gdimg_output, $this->config_error_textcolor);

                $topoffset = round(($this->thumbnail_height - (count($nohotlink_text_array) * ImageFontHeight($this->config_error_fontsize))) / 2);

                $rowcounter = 0;
                $this->DebugMessage('AntiOffsiteLinking() writing ' . count($nohotlink_text_array) . ' lines of text "' . $message . '" (in #' . $this->config_error_textcolor . ') on top of image', __FILE__, __LINE__);
                foreach ($nohotlink_text_array as $textline) {
                    $leftoffset = max(0, round(($this->thumbnail_width - (strlen($textline) * ImageFontWidth($this->config_error_fontsize))) / 2));
                    ImageString($this->gdimg_output, $this->config_error_fontsize, $leftoffset, $topoffset + ($rowcounter++ * ImageFontHeight($this->config_error_fontsize)), $textline, $nohotlink_text_color);
                }
            }
        }
        return true;
    }

    function AlphaChannelFlatten() {
        if (!$this->is_alpha) {
            // image doesn't have alpha transparency, no need to flatten
            $this->DebugMessage('skipping AlphaChannelFlatten() because !$this->is_alpha', __FILE__, __LINE__);
            return false;
        }
        switch ($this->thumbnailFormat) {
            case 'png':
            case 'ico':
                // image has alpha transparency, but output as PNG or ICO which can handle it
                $this->DebugMessage('skipping AlphaChannelFlatten() because ($this->thumbnailFormat == "' . $this->thumbnailFormat . '")', __FILE__, __LINE__);
                return false;
                break;

            case 'gif':
                // image has alpha transparency, but output as GIF which can handle only single-color transparency
                $CurrentImageColorTransparent = ImageColorTransparent($this->gdimg_output);
                if ($CurrentImageColorTransparent == -1) {
                    // no transparent color defined

                    if (phpthumb_functions::gd_version() < 2.0) {
                        $this->DebugMessage('AlphaChannelFlatten() failed because GD version is "' . phpthumb_functions::gd_version() . '"', __FILE__, __LINE__);
                        return false;
                    }

                    if ($img_alpha_mixdown_dither = @ImageCreateTrueColor(ImageSX($this->gdimg_output), ImageSY($this->gdimg_output))) {

                        for ($i = 0; $i <= 255; $i++) {
                            $dither_color[$i] = ImageColorAllocate($img_alpha_mixdown_dither, $i, $i, $i);
                        }

                        // scan through current truecolor image copy alpha channel to temp image as grayscale
                        for ($x = 0; $x < $this->thumbnail_width; $x++) {
                            for ($y = 0; $y < $this->thumbnail_height; $y++) {
                                $PixelColor = phpthumb_functions::GetPixelColor($this->gdimg_output, $x, $y);
                                ImageSetPixel($img_alpha_mixdown_dither, $x, $y, $dither_color[($PixelColor['alpha'] * 2)]);
                            }
                        }

                        // dither alpha channel grayscale version down to 2 colors
                        ImageTrueColorToPalette($img_alpha_mixdown_dither, true, 2);

                        // reduce color palette to 256-1 colors (leave one palette position for transparent color)
                        ImageTrueColorToPalette($this->gdimg_output, true, 255);

                        // allocate a new color for transparent color index
                        $TransparentColor = ImageColorAllocate($this->gdimg_output, 1, 254, 253);
                        ImageColorTransparent($this->gdimg_output, $TransparentColor);

                        // scan through alpha channel image and note pixels with >50% transparency
                        $TransparentPixels = array();
                        for ($x = 0; $x < $this->thumbnail_width; $x++) {
                            for ($y = 0; $y < $this->thumbnail_height; $y++) {
                                $AlphaChannelPixel = phpthumb_functions::GetPixelColor($img_alpha_mixdown_dither, $x, $y);
                                if ($AlphaChannelPixel['red'] > 127) {
                                    ImageSetPixel($this->gdimg_output, $x, $y, $TransparentColor);
                                }
                            }
                        }
                        ImageDestroy($img_alpha_mixdown_dither);

                        $this->DebugMessage('AlphaChannelFlatten() set image to 255+1 colors with transparency for GIF output', __FILE__, __LINE__);
                        return true;
                    } else {
                        $this->DebugMessage('AlphaChannelFlatten() failed ImageCreate(' . ImageSX($this->gdimg_output) . ', ' . ImageSY($this->gdimg_output) . ')', __FILE__, __LINE__);
                        return false;
                    }
                } else {
                    // a single transparent color already defined, leave as-is
                    $this->DebugMessage('skipping AlphaChannelFlatten() because ($this->thumbnailFormat == "' . $this->thumbnailFormat . '") and ImageColorTransparent returned "' . $CurrentImageColorTransparent . '"', __FILE__, __LINE__);
                    return true;
                }
                break;
        }
        $this->DebugMessage('continuing AlphaChannelFlatten() for output format "' . $this->thumbnailFormat . '"', __FILE__, __LINE__);
        // image has alpha transparency, and is being output in a format that doesn't support it -- flatten
        if ($gdimg_flatten_temp = phpthumb_functions::ImageCreateFunction($this->thumbnail_width, $this->thumbnail_height)) {

            $this->config_background_hexcolor = ($this->bg ? $this->bg : $this->config_background_hexcolor);
            if (!phpthumb_functions::IsHexColor($this->config_background_hexcolor)) {
                return $this->ErrorImage('Invalid hex color string "' . $this->config_background_hexcolor . '" for parameter "bg"');
            }
            $background_color = phpthumb_functions::ImageHexColorAllocate($this->gdimg_output, $this->config_background_hexcolor);
            ImageFilledRectangle($gdimg_flatten_temp, 0, 0, $this->thumbnail_width, $this->thumbnail_height, $background_color);
            ImageCopy($gdimg_flatten_temp, $this->gdimg_output, 0, 0, 0, 0, $this->thumbnail_width, $this->thumbnail_height);

            ImageAlphaBlending($this->gdimg_output, true);
            ImageSaveAlpha($this->gdimg_output, false);
            ImageColorTransparent($this->gdimg_output, -1);
            ImageCopy($this->gdimg_output, $gdimg_flatten_temp, 0, 0, 0, 0, $this->thumbnail_width, $this->thumbnail_height);

            ImageDestroy($gdimg_flatten_temp);
            return true;
        } else {
            $this->DebugMessage('ImageCreateFunction() failed', __FILE__, __LINE__);
        }
        return false;
    }

    function ApplyFilters() {
        if ($this->fltr && is_array($this->fltr)) {
            if (!include_once(dirname(__FILE__) . '/phpthumb.filters.php')) {
                $this->DebugMessage('Error including "' . dirname(__FILE__) . '/phpthumb.filters.php" which is required for applying filters (' . implode(';', $this->fltr) . ')', __FILE__, __LINE__);
                return false;
            }
            $phpthumbFilters = new phpthumb_filters();
            $phpthumbFilters->phpThumbObject = &$this;
            foreach ($this->fltr as $filtercommand) {
                @list($command, $parameter) = explode('|', $filtercommand, 2);
                $this->DebugMessage('Attempting to process filter command "' . $command . '(' . $parameter . ')"', __FILE__, __LINE__);
                switch ($command) {
                    case 'brit': // Brightness
                        $phpthumbFilters->Brightness($this->gdimg_output, $parameter);
                        break;

                    case 'cont': // Contrast
                        $phpthumbFilters->Contrast($this->gdimg_output, $parameter);
                        break;

                    case 'ds': // Desaturation
                        $phpthumbFilters->Desaturate($this->gdimg_output, $parameter, '');
                        break;

                    case 'sat': // Saturation
                        $phpthumbFilters->Saturation($this->gdimg_output, $parameter, '');
                        break;

                    case 'gray': // Grayscale
                        $phpthumbFilters->Grayscale($this->gdimg_output);
                        break;

                    case 'clr': // Colorize
                        if (phpthumb_functions::gd_version() < 2) {
                            $this->DebugMessage('Skipping Colorize() because gd_version is "' . phpthumb_functions::gd_version() . '"', __FILE__, __LINE__);
                            break;
                        }
                        @list($amount, $color) = explode('|', $parameter, 2);
                        $phpthumbFilters->Colorize($this->gdimg_output, $amount, $color);
                        break;

                    case 'sep': // Sepia
                        if (phpthumb_functions::gd_version() < 2) {
                            $this->DebugMessage('Skipping Sepia() because gd_version is "' . phpthumb_functions::gd_version() . '"', __FILE__, __LINE__);
                            break;
                        }
                        @list($amount, $color) = explode('|', $parameter, 2);
                        $phpthumbFilters->Sepia($this->gdimg_output, $amount, $color);
                        break;

                    case 'gam': // Gamma correction
                        $phpthumbFilters->Gamma($this->gdimg_output, $parameter);
                        break;

                    case 'neg': // Negative colors
                        $phpthumbFilters->Negative($this->gdimg_output);
                        break;

                    case 'th': // Threshold
                        $phpthumbFilters->Threshold($this->gdimg_output, $parameter);
                        break;

                    case 'rcd': // ReduceColorDepth
                        if (phpthumb_functions::gd_version() < 2) {
                            $this->DebugMessage('Skipping ReduceColorDepth() because gd_version is "' . phpthumb_functions::gd_version() . '"', __FILE__, __LINE__);
                            break;
                        }
                        @list($colors, $dither) = explode('|', $parameter, 2);
                        $colors = ($colors ? (int) $colors : 256);
                        $dither = ((strlen($dither) > 0) ? (bool) $dither : true);
                        $phpthumbFilters->ReduceColorDepth($this->gdimg_output, $colors, $dither);
                        break;

                    case 'flip': // Flip
                        $phpthumbFilters->Flip($this->gdimg_output, (strpos(strtolower($parameter), 'x') !== false), (strpos(strtolower($parameter), 'y') !== false));
                        break;

                    case 'edge': // EdgeDetect
                        $phpthumbFilters->EdgeDetect($this->gdimg_output);
                        break;

                    case 'emb': // Emboss
                        $phpthumbFilters->Emboss($this->gdimg_output);
                        break;

                    case 'bvl': // Bevel
                        @list($width, $color1, $color2) = explode('|', $parameter, 3);
                        $phpthumbFilters->Bevel($this->gdimg_output, $width, $color1, $color2);
                        break;

                    case 'lvl': // autoLevels
                        @list($band, $method, $threshold) = explode('|', $parameter, 3);
                        $band = ($band ? preg_replace('#[^RGBA\\*]#', '', strtoupper($band)) : '*');
                        $method = ((strlen($method) > 0) ? intval($method) : 2);
                        $threshold = ((strlen($threshold) > 0) ? floatval($threshold) : 0.1);

                        $phpthumbFilters->HistogramStretch($this->gdimg_output, $band, $method, $threshold);
                        break;

                    case 'wb': // WhiteBalance
                        $phpthumbFilters->WhiteBalance($this->gdimg_output, $parameter);
                        break;

                    case 'hist': // Histogram overlay
                        if (phpthumb_functions::gd_version() < 2) {
                            $this->DebugMessage('Skipping HistogramOverlay() because gd_version is "' . phpthumb_functions::gd_version() . '"', __FILE__, __LINE__);
                            break;
                        }
                        @list($bands, $colors, $width, $height, $alignment, $opacity, $margin_x, $margin_y) = explode('|', $parameter, 8);
                        $bands = ($bands ? $bands : '*');
                        $colors = ($colors ? $colors : '');
                        $width = ($width ? $width : 0.25);
                        $height = ($height ? $height : 0.25);
                        $alignment = ($alignment ? $alignment : 'BR');
                        $opacity = ($opacity ? $opacity : 50);
                        $margin_x = ($margin_x ? $margin_x : 5);
                        $margin_y = $margin_y; // just to note it wasn't forgotten, but let the value always pass unchanged
                        $phpthumbFilters->HistogramOverlay($this->gdimg_output, $bands, $colors, $width, $height, $alignment, $opacity, $margin_x, $margin_y);
                        break;

                    case 'fram': // Frame
                        @list($frame_width, $edge_width, $color_frame, $color1, $color2) = explode('|', $parameter, 5);
                        $phpthumbFilters->Frame($this->gdimg_output, $frame_width, $edge_width, $color_frame, $color1, $color2);
                        break;

                    case 'drop': // DropShadow
                        if (phpthumb_functions::gd_version() < 2) {
                            $this->DebugMessage('Skipping DropShadow() because gd_version is "' . phpthumb_functions::gd_version() . '"', __FILE__, __LINE__);
                            return false;
                        }
                        $this->is_alpha = true;
                        @list($distance, $width, $color, $angle, $fade) = explode('|', $parameter, 5);
                        $phpthumbFilters->DropShadow($this->gdimg_output, $distance, $width, $color, $angle, $fade);
                        break;

                    case 'mask': // Mask cropping
                        if (phpthumb_functions::gd_version() < 2) {
                            $this->DebugMessage('Skipping Mask() because gd_version is "' . phpthumb_functions::gd_version() . '"', __FILE__, __LINE__);
                            return false;
                        }
                        $mask_filename = $this->ResolveFilenameToAbsolute($parameter);
                        if (@is_readable($mask_filename) && ($fp_mask = @fopen($mask_filename, 'rb'))) {
                            $MaskImageData = '';
                            do {
                                $buffer = fread($fp_mask, 8192);
                                $MaskImageData .= $buffer;
                            } while (strlen($buffer) > 0);
                            fclose($fp_mask);
                            if ($gdimg_mask = $this->ImageCreateFromStringReplacement($MaskImageData)) {
                                $this->is_alpha = true;
                                $phpthumbFilters->ApplyMask($gdimg_mask, $this->gdimg_output);
                                ImageDestroy($gdimg_mask);
                            } else {
                                $this->DebugMessage('ImageCreateFromStringReplacement() failed for "' . $mask_filename . '"', __FILE__, __LINE__);
                            }
                        } else {
                            $this->DebugMessage('Cannot open mask file "' . $mask_filename . '"', __FILE__, __LINE__);
                        }
                        break;

                    case 'elip': // Elipse cropping
                        if (phpthumb_functions::gd_version() < 2) {
                            $this->DebugMessage('Skipping Elipse() because gd_version is "' . phpthumb_functions::gd_version() . '"', __FILE__, __LINE__);
                            return false;
                        }
                        $this->is_alpha = true;
                        $phpthumbFilters->Elipse($this->gdimg_output);
                        break;

                    case 'ric': // RoundedImageCorners
                        if (phpthumb_functions::gd_version() < 2) {
                            $this->DebugMessage('Skipping RoundedImageCorners() because gd_version is "' . phpthumb_functions::gd_version() . '"', __FILE__, __LINE__);
                            return false;
                        }
                        @list($radius_x, $radius_y) = explode('|', $parameter, 2);
                        if (($radius_x < 1) || ($radius_y < 1)) {
                            $this->DebugMessage('Skipping RoundedImageCorners(' . $radius_x . ', ' . $radius_y . ') because x/y radius is less than 1', __FILE__, __LINE__);
                            break;
                        }
                        $this->is_alpha = true;
                        $phpthumbFilters->RoundedImageCorners($this->gdimg_output, $radius_x, $radius_y);
                        break;

                    case 'crop': // Crop
                        @list($left, $right, $top, $bottom) = explode('|', $parameter, 4);
                        $phpthumbFilters->Crop($this->gdimg_output, $left, $right, $top, $bottom);
                        break;

                    case 'bord': // Border
                        @list($border_width, $radius_x, $radius_y, $hexcolor_border) = explode('|', $parameter, 4);
                        $this->is_alpha = true;
                        $phpthumbFilters->ImageBorder($this->gdimg_output, $border_width, $radius_x, $radius_y, $hexcolor_border);
                        break;

                    case 'over': // Overlay
                        @list($filename, $underlay, $margin, $opacity) = explode('|', $parameter, 4);
                        $underlay = (bool) ($underlay ? $underlay : false);
                        $margin = ((strlen($margin) > 0) ? $margin : ($underlay ? 0.1 : 0.0));
                        $opacity = ((strlen($opacity) > 0) ? $opacity : 100);
                        if (($margin > 0) && ($margin < 1)) {
                            $margin = min(0.499, $margin);
                        } elseif (($margin > -1) && ($margin < 0)) {
                            $margin = max(-0.499, $margin);
                        }

                        $filename = $this->ResolveFilenameToAbsolute($filename);
                        if (@is_readable($filename) && ($fp_watermark = @fopen($filename, 'rb'))) {
                            $WatermarkImageData = '';
                            do {
                                $buffer = fread($fp_watermark, 8192);
                                $WatermarkImageData .= $buffer;
                            } while (strlen($buffer) > 0);
                            fclose($fp_watermark);
                            if ($img_watermark = $this->ImageCreateFromStringReplacement($WatermarkImageData)) {
                                if ($margin < 1) {
                                    $resized_x = max(1, ImageSX($this->gdimg_output) - round(2 * (ImageSX($this->gdimg_output) * $margin)));
                                    $resized_y = max(1, ImageSY($this->gdimg_output) - round(2 * (ImageSY($this->gdimg_output) * $margin)));
                                } else {
                                    $resized_x = max(1, ImageSX($this->gdimg_output) - round(2 * $margin));
                                    $resized_y = max(1, ImageSY($this->gdimg_output) - round(2 * $margin));
                                }

                                if ($underlay) {

                                    if ($img_watermark_resized = phpthumb_functions::ImageCreateFunction(ImageSX($this->gdimg_output), ImageSY($this->gdimg_output))) {
                                        ImageAlphaBlending($img_watermark_resized, false);
                                        ImageSaveAlpha($img_watermark_resized, true);
                                        $this->ImageResizeFunction($img_watermark_resized, $img_watermark, 0, 0, 0, 0, ImageSX($img_watermark_resized), ImageSY($img_watermark_resized), ImageSX($img_watermark), ImageSY($img_watermark));
                                        if ($img_source_resized = phpthumb_functions::ImageCreateFunction($resized_x, $resized_y)) {
                                            ImageAlphaBlending($img_source_resized, false);
                                            ImageSaveAlpha($img_source_resized, true);
                                            $this->ImageResizeFunction($img_source_resized, $this->gdimg_output, 0, 0, 0, 0, ImageSX($img_source_resized), ImageSY($img_source_resized), ImageSX($this->gdimg_output), ImageSY($this->gdimg_output));
                                            $phpthumbFilters->WatermarkOverlay($img_watermark_resized, $img_source_resized, 'C', $opacity, $margin);
                                            ImageCopy($this->gdimg_output, $img_watermark_resized, 0, 0, 0, 0, ImageSX($this->gdimg_output), ImageSY($this->gdimg_output));
                                        } else {
                                            $this->DebugMessage('phpthumb_functions::ImageCreateFunction(' . $resized_x . ', ' . $resized_y . ')', __FILE__, __LINE__);
                                        }
                                        ImageDestroy($img_watermark_resized);
                                    } else {
                                        $this->DebugMessage('phpthumb_functions::ImageCreateFunction(' . ImageSX($this->gdimg_output) . ', ' . ImageSY($this->gdimg_output) . ')', __FILE__, __LINE__);
                                    }
                                } else { // overlay
                                    if ($img_watermark_resized = phpthumb_functions::ImageCreateFunction($resized_x, $resized_y)) {
                                        ImageAlphaBlending($img_watermark_resized, false);
                                        ImageSaveAlpha($img_watermark_resized, true);
                                        $this->ImageResizeFunction($img_watermark_resized, $img_watermark, 0, 0, 0, 0, ImageSX($img_watermark_resized), ImageSY($img_watermark_resized), ImageSX($img_watermark), ImageSY($img_watermark));
                                        $phpthumbFilters->WatermarkOverlay($this->gdimg_output, $img_watermark_resized, 'C', $opacity, $margin);
                                        ImageDestroy($img_watermark_resized);
                                    } else {
                                        $this->DebugMessage('phpthumb_functions::ImageCreateFunction(' . $resized_x . ', ' . $resized_y . ')', __FILE__, __LINE__);
                                    }
                                }
                                ImageDestroy($img_watermark);
                            } else {
                                $this->DebugMessage('ImageCreateFromStringReplacement() failed for "' . $filename . '"', __FILE__, __LINE__);
                            }
                        } else {
                            $this->DebugMessage('Cannot open overlay file "' . $filename . '"', __FILE__, __LINE__);
                        }
                        break;

                    case 'wmi': // WaterMarkImage
                        @list($filename, $alignment, $opacity, $margin['x'], $margin['y'], $rotate_angle) = explode('|', $parameter, 6);
                        // $margin can be pixel margin or percent margin if $alignment is text, or max width/height if $alignment is position like "50x75"
                        $alignment = ($alignment ? $alignment : 'BR');
                        $opacity = (strlen($opacity) ? intval($opacity) : 50);
                        $rotate_angle = (strlen($rotate_angle) ? intval($rotate_angle) : 0);
                        if (!preg_match('#^([0-9\\.\\-]*)x([0-9\\.\\-]*)$#i', $alignment, $matches)) {
                            $margins = array('x', 'y');
                            foreach ($margins as $xy) {
                                $margin[$xy] = (strlen($margin[$xy]) ? $margin[$xy] : 5);
                                if (($margin[$xy] > 0) && ($margin[$xy] < 1)) {
                                    $margin[$xy] = min(0.499, $margin[$xy]);
                                } elseif (($margin[$xy] > -1) && ($margin[$xy] < 0)) {
                                    $margin[$xy] = max(-0.499, $margin[$xy]);
                                }
                            }
                        }

                        $filename = $this->ResolveFilenameToAbsolute($filename);
                        if (@is_readable($filename)) {
                            if ($img_watermark = $this->ImageCreateFromFilename($filename)) {
                                if ($rotate_angle !== 0) {
                                    $phpthumbFilters->ImprovedImageRotate($img_watermark, $rotate_angle);
                                }
                                if (preg_match('#^([0-9\\.\\-]*)x([0-9\\.\\-]*)$#i', $alignment, $matches)) {
                                    $watermark_max_width = intval($margin['x'] ? $margin['x'] : ImageSX($img_watermark));
                                    $watermark_max_height = intval($margin['y'] ? $margin['y'] : ImageSY($img_watermark));
                                    $scale = phpthumb_functions::ScaleToFitInBox(ImageSX($img_watermark), ImageSY($img_watermark), $watermark_max_width, $watermark_max_height, true, true);
                                    $this->DebugMessage('Scaling watermark by a factor of ' . number_format($scale, 4), __FILE__, __LINE__);
                                    if (($scale > 1) || ($scale < 1)) {
                                        if ($img_watermark2 = phpthumb_functions::ImageCreateFunction($scale * ImageSX($img_watermark), $scale * ImageSY($img_watermark))) {
                                            ImageAlphaBlending($img_watermark2, false);
                                            ImageSaveAlpha($img_watermark2, true);
                                            $this->ImageResizeFunction($img_watermark2, $img_watermark, 0, 0, 0, 0, ImageSX($img_watermark2), ImageSY($img_watermark2), ImageSX($img_watermark), ImageSY($img_watermark));
                                            $img_watermark = $img_watermark2;
                                        } else {
                                            $this->DebugMessage('ImageCreateFunction(' . ($scale * ImageSX($img_watermark)) . ', ' . ($scale * ImageSX($img_watermark)) . ') failed', __FILE__, __LINE__);
                                        }
                                    }
                                    $watermark_dest_x = round($matches[1] - (ImageSX($img_watermark) / 2));
                                    $watermark_dest_y = round($matches[2] - (ImageSY($img_watermark) / 2));
                                    $alignment = $watermark_dest_x . 'x' . $watermark_dest_y;
                                }
                                $phpthumbFilters->WatermarkOverlay($this->gdimg_output, $img_watermark, $alignment, $opacity, $margin['x'], $margin['y']);
                                ImageDestroy($img_watermark);
                                if (isset($img_watermark2) && is_resource($img_watermark2)) {
                                    ImageDestroy($img_watermark2);
                                }
                            } else {
                                $this->DebugMessage('ImageCreateFromFilename() failed for "' . $filename . '"', __FILE__, __LINE__);
                            }
                        } else {
                            $this->DebugMessage('!is_readable(' . $filename . ')', __FILE__, __LINE__);
                        }
                        break;

                    case 'wmt': // WaterMarkText
                        @list($text, $size, $alignment, $hex_color, $ttffont, $opacity, $margin, $angle, $bg_color, $bg_opacity, $fillextend) = explode('|', $parameter, 11);
                        $text = ($text ? $text : '');
                        $size = ($size ? $size : 3);
                        $alignment = ($alignment ? $alignment : 'BR');
                        $hex_color = ($hex_color ? $hex_color : '000000');
                        $ttffont = ($ttffont ? $ttffont : '');
                        $opacity = (strlen($opacity) ? $opacity : 50);
                        $margin = (strlen($margin) ? $margin : 5);
                        $angle = (strlen($angle) ? $angle : 0);
                        $bg_color = ($bg_color ? $bg_color : false);
                        $bg_opacity = ($bg_opacity ? $bg_opacity : 0);
                        $fillextend = ($fillextend ? $fillextend : '');

                        if (basename($ttffont) == $ttffont) {
                            $ttffont = realpath($this->config_ttf_directory . DIRECTORY_SEPARATOR . $ttffont);
                        } else {
                            $ttffont = $this->ResolveFilenameToAbsolute($ttffont);
                        }
                        $phpthumbFilters->WatermarkText($this->gdimg_output, $text, $size, $alignment, $hex_color, $ttffont, $opacity, $margin, $angle, $bg_color, $bg_opacity, $fillextend);
                        break;

                    case 'blur': // Blur
                        @list($radius) = explode('|', $parameter, 1);
                        $radius = ($radius ? $radius : 1);
                        if (phpthumb_functions::gd_version() >= 2) {
                            $phpthumbFilters->Blur($this->gdimg_output, $radius);
                        } else {
                            $this->DebugMessage('Skipping Blur() because gd_version is "' . phpthumb_functions::gd_version() . '"', __FILE__, __LINE__);
                        }
                        break;

                    case 'gblr': // Gaussian Blur
                        $phpthumbFilters->BlurGaussian($this->gdimg_output);
                        break;

                    case 'sblr': // Selective Blur
                        $phpthumbFilters->BlurSelective($this->gdimg_output);
                        break;

                    case 'mean': // MeanRemoval blur
                        $phpthumbFilters->MeanRemoval($this->gdimg_output);
                        break;

                    case 'smth': // Smooth blur
                        $phpthumbFilters->Smooth($this->gdimg_output, $parameter);
                        break;

                    case 'usm': // UnSharpMask sharpening
                        @list($amount, $radius, $threshold) = explode('|', $parameter, 3);
                        $amount = ($amount ? $amount : 80);
                        $radius = ($radius ? $radius : 0.5);
                        $threshold = (strlen($threshold) ? $threshold : 3);
                        if (phpthumb_functions::gd_version() >= 2.0) {
                            ob_start();
                            if (!@include_once(dirname(__FILE__) . '/phpthumb.unsharp.php')) {
                                $include_error = ob_get_contents();
                                if ($include_error) {
                                    $this->DebugMessage('include_once("' . dirname(__FILE__) . '/phpthumb.unsharp.php") generated message: "' . $include_error . '"', __FILE__, __LINE__);
                                }
                                $this->DebugMessage('Error including "' . dirname(__FILE__) . '/phpthumb.unsharp.php" which is required for unsharp masking', __FILE__, __LINE__);
                                ob_end_clean();
                                return false;
                            }
                            ob_end_clean();
                            phpUnsharpMask::applyUnsharpMask($this->gdimg_output, $amount, $radius, $threshold);
                        } else {
                            $this->DebugMessage('Skipping unsharp mask because gd_version is "' . phpthumb_functions::gd_version() . '"', __FILE__, __LINE__);
                            return false;
                        }
                        break;

                    case 'size': // Resize
                        @list($newwidth, $newheight, $stretch) = explode('|', $parameter);
                        $newwidth = (!$newwidth ? ImageSX($this->gdimg_output) : ((($newwidth > 0) && ($newwidth < 1)) ? round($newwidth * ImageSX($this->gdimg_output)) : round($newwidth)));
                        $newheight = (!$newheight ? ImageSY($this->gdimg_output) : ((($newheight > 0) && ($newheight < 1)) ? round($newheight * ImageSY($this->gdimg_output)) : round($newheight)));
                        $stretch = ($stretch ? true : false);
                        if ($stretch) {
                            $scale_x = phpthumb_functions::ScaleToFitInBox(ImageSX($this->gdimg_output), ImageSX($this->gdimg_output), $newwidth, $newwidth, true, true);
                            $scale_y = phpthumb_functions::ScaleToFitInBox(ImageSY($this->gdimg_output), ImageSY($this->gdimg_output), $newheight, $newheight, true, true);
                        } else {
                            $scale_x = phpthumb_functions::ScaleToFitInBox(ImageSX($this->gdimg_output), ImageSY($this->gdimg_output), $newwidth, $newheight, true, true);
                            $scale_y = $scale_x;
                        }
                        $this->DebugMessage('Scaling watermark (' . ($stretch ? 'with' : 'without') . ' stretch) by a factor of "' . number_format($scale_x, 4) . ' x ' . number_format($scale_y, 4) . '"', __FILE__, __LINE__);
                        if (($scale_x > 1) || ($scale_x < 1) || ($scale_y > 1) || ($scale_y < 1)) {
                            if ($img_temp = phpthumb_functions::ImageCreateFunction(ImageSX($this->gdimg_output), ImageSY($this->gdimg_output))) {
                                ImageCopy($img_temp, $this->gdimg_output, 0, 0, 0, 0, ImageSX($this->gdimg_output), ImageSY($this->gdimg_output));
                                //ImageDestroy($this->gdimg_output);
                                if ($this->gdimg_output = phpthumb_functions::ImageCreateFunction($scale_x * ImageSX($img_temp), $scale_y * ImageSY($img_temp))) {
                                    ImageAlphaBlending($this->gdimg_output, false);
                                    ImageSaveAlpha($this->gdimg_output, true);
                                    $this->ImageResizeFunction($this->gdimg_output, $img_temp, 0, 0, 0, 0, ImageSX($this->gdimg_output), ImageSY($this->gdimg_output), ImageSX($img_temp), ImageSY($img_temp));
                                } else {
                                    $this->DebugMessage('ImageCreateFunction(' . ($scale_x * ImageSX($img_temp)) . ', ' . ($scale_y * ImageSY($img_temp)) . ') failed', __FILE__, __LINE__);
                                }
                                ImageDestroy($img_temp);
                            } else {
                                $this->DebugMessage('ImageCreateFunction(' . ImageSX($this->gdimg_output) . ', ' . ImageSY($this->gdimg_output) . ') failed', __FILE__, __LINE__);
                            }
                        }
                        break;

                    case 'rot': // ROTate
                        @list($angle, $bgcolor) = explode('|', $parameter, 2);
                        $phpthumbFilters->ImprovedImageRotate($this->gdimg_output, $angle, $bgcolor);
                        break;

                    case 'stc': // Source Transparent Color
                        @list($hexcolor, $min_limit, $max_limit) = explode('|', $parameter, 3);
                        if (!phpthumb_functions::IsHexColor($hexcolor)) {
                            $this->DebugMessage('Skipping SourceTransparentColor hex color is invalid (' . $hexcolor . ')', __FILE__, __LINE__);
                            return false;
                        }
                        $min_limit = (strlen($min_limit) ? $min_limit : 5);
                        $max_limit = (strlen($max_limit) ? $max_limit : 10);
                        if ($gdimg_mask = $phpthumbFilters->SourceTransparentColorMask($this->gdimg_output, $hexcolor, $min_limit, $max_limit)) {
                            $this->is_alpha = true;
                            $phpthumbFilters->ApplyMask($gdimg_mask, $this->gdimg_output);
                            ImageDestroy($gdimg_mask);
                        } else {
                            $this->DebugMessage('SourceTransparentColorMask() failed for "' . $mask_filename . '"', __FILE__, __LINE__);
                        }
                        break;
                }
                $this->DebugMessage('Finished processing filter command "' . $command . '(' . $parameter . ')"', __FILE__, __LINE__);
            }
        }
        return true;
    }

    function MaxFileSize() {
        if (phpthumb_functions::gd_version() < 2) {
            $this->DebugMessage('Skipping MaxFileSize() because gd_version is "' . phpthumb_functions::gd_version() . '"', __FILE__, __LINE__);
            return false;
        }
        if ($this->maxb > 0) {
            switch ($this->thumbnailFormat) {
                case 'png':
                case 'gif':
                    $imgRenderFunction = 'image' . $this->thumbnailFormat;

                    ob_start();
                    $imgRenderFunction($this->gdimg_output);
                    $imgdata = ob_get_contents();
                    ob_end_clean();

                    if (strlen($imgdata) > $this->maxb) {
                        for ($i = 8; $i >= 1; $i--) {
                            $tempIMG = ImageCreateTrueColor(ImageSX($this->gdimg_output), ImageSY($this->gdimg_output));
                            ImageCopy($tempIMG, $this->gdimg_output, 0, 0, 0, 0, ImageSX($this->gdimg_output), ImageSY($this->gdimg_output));
                            ImageTrueColorToPalette($tempIMG, true, pow(2, $i));
                            ob_start();
                            $imgRenderFunction($tempIMG);
                            $imgdata = ob_get_contents();
                            ob_end_clean();

                            if (strlen($imgdata) <= $this->maxb) {
                                ImageTrueColorToPalette($this->gdimg_output, true, pow(2, $i));
                                break;
                            }
                        }
                    }
                    if (strlen($imgdata) > $this->maxb) {
                        ImageTrueColorToPalette($this->gdimg_output, true, pow(2, $i));
                        return false;
                    }
                    break;

                case 'jpeg':
                    ob_start();
                    ImageJPEG($this->gdimg_output);
                    $imgdata = ob_get_contents();
                    ob_end_clean();

                    $OriginalJPEGquality = $this->thumbnailQuality;
                    if (strlen($imgdata) > $this->maxb) {
                        for ($i = 3; $i < 20; $i++) {
                            $q = round(100 * (1 - log10($i / 2)));
                            ob_start();
                            ImageJPEG($this->gdimg_output, '', $q);
                            $imgdata = ob_get_contents();
                            ob_end_clean();

                            $this->thumbnailQuality = $q;
                            if (strlen($imgdata) <= $this->maxb) {
                                break;
                            }
                        }
                    }
                    if (strlen($imgdata) > $this->maxb) {
                        return false;
                    }
                    break;

                default:
                    return false;
                    break;
            }
        }
        return true;
    }

    function CalculateThumbnailDimensions() {
        $this->DebugMessage('CalculateThumbnailDimensions() starting with [W,H,sx,sy,sw,sh] initially set to [' . $this->source_width . ',' . $this->source_height . ',' . $this->sx . ',' . $this->sy . ',' . $this->sw . ',' . $this->sh . ']', __FILE__, __LINE__);
//echo $this->source_width.'x'.$this->source_height.'<hr>';
        $this->thumbnailCropX = ($this->sx ? (($this->sx >= 2) ? $this->sx : round($this->sx * $this->source_width)) : 0);
//echo $this->thumbnailCropX.'<br>';
        $this->thumbnailCropY = ($this->sy ? (($this->sy >= 2) ? $this->sy : round($this->sy * $this->source_height)) : 0);
//echo $this->thumbnailCropY.'<br>';
        $this->thumbnailCropW = ($this->sw ? (($this->sw >= 2) ? $this->sw : round($this->sw * $this->source_width)) : $this->source_width);
//echo $this->thumbnailCropW.'<br>';
        $this->thumbnailCropH = ($this->sh ? (($this->sh >= 2) ? $this->sh : round($this->sh * $this->source_height)) : $this->source_height);
//echo $this->thumbnailCropH.'<hr>';
        // limit source area to original image area
        $this->thumbnailCropW = max(1, min($this->thumbnailCropW, $this->source_width - $this->thumbnailCropX));
        $this->thumbnailCropH = max(1, min($this->thumbnailCropH, $this->source_height - $this->thumbnailCropY));

        $this->DebugMessage('CalculateThumbnailDimensions() starting with [x,y,w,h] initially set to [' . $this->thumbnailCropX . ',' . $this->thumbnailCropY . ',' . $this->thumbnailCropW . ',' . $this->thumbnailCropH . ']', __FILE__, __LINE__);


        if ($this->zc && $this->w && $this->h) {
            // Zoom Crop
            // retain proportional resizing we did above, but crop off larger dimension so smaller
            // dimension fully fits available space

            $scaling_X = $this->source_width / $this->w;
            $scaling_Y = $this->source_height / $this->h;
            if ($scaling_X > $scaling_Y) {
                // some of the width will need to be cropped
                $allowable_width = $this->source_width / $scaling_X * $scaling_Y;
                $this->thumbnailCropW = round($allowable_width);
                $this->thumbnailCropX = round(($this->source_width - $allowable_width) / 2);
            } elseif ($scaling_Y > $scaling_X) {
                // some of the height will need to be cropped
                $allowable_height = $this->source_height / $scaling_Y * $scaling_X;
                $this->thumbnailCropH = round($allowable_height);
                $this->thumbnailCropY = round(($this->source_height - $allowable_height) / 2);
            } else {
                // image fits perfectly, no cropping needed
            }
            $this->thumbnail_width = $this->w;
            $this->thumbnail_height = $this->h;
            $this->thumbnail_image_width = $this->thumbnail_width;
            $this->thumbnail_image_height = $this->thumbnail_height;
        } elseif ($this->iar && $this->w && $this->h) {

            // Ignore Aspect Ratio
            // stretch image to fit exactly 'w' x 'h'
            $this->thumbnail_width = $this->w;
            $this->thumbnail_height = $this->h;
            $this->thumbnail_image_width = $this->thumbnail_width;
            $this->thumbnail_image_height = $this->thumbnail_height;
        } else {

            $original_aspect_ratio = $this->thumbnailCropW / $this->thumbnailCropH;
            if ($this->aoe) {
                if ($this->w && $this->h) {
                    $maxwidth = min($this->w, $this->h * $original_aspect_ratio);
                    $maxheight = min($this->h, $this->w / $original_aspect_ratio);
                } elseif ($this->w) {
                    $maxwidth = $this->w;
                    $maxheight = $this->w / $original_aspect_ratio;
                } elseif ($this->h) {
                    $maxwidth = $this->h * $original_aspect_ratio;
                    $maxheight = $this->h;
                } else {
                    $maxwidth = $this->thumbnailCropW;
                    $maxheight = $this->thumbnailCropH;
                }
            } else {
                $maxwidth = phpthumb_functions::nonempty_min($this->w, $this->thumbnailCropW, $this->config_output_maxwidth);
                $maxheight = phpthumb_functions::nonempty_min($this->h, $this->thumbnailCropH, $this->config_output_maxheight);
//echo $maxwidth.'x'.$maxheight.'<br>';
                $maxwidth = min($maxwidth, $maxheight * $original_aspect_ratio);
                $maxheight = min($maxheight, $maxwidth / $original_aspect_ratio);
//echo $maxwidth.'x'.$maxheight.'<hr>';
            }

            $this->thumbnail_image_width = $maxwidth;
            $this->thumbnail_image_height = $maxheight;
            $this->thumbnail_width = $maxwidth;
            $this->thumbnail_height = $maxheight;

            $this->FixedAspectRatio();
        }

        $this->thumbnail_width = max(1, floor($this->thumbnail_width));
        $this->thumbnail_height = max(1, floor($this->thumbnail_height));
        return true;
    }

    function CreateGDoutput() {
        $this->CalculateThumbnailDimensions();

        // Create the GD image (either true-color or 256-color, depending on GD version)
        $this->gdimg_output = phpthumb_functions::ImageCreateFunction($this->thumbnail_width, $this->thumbnail_height);

        // Images that have transparency must have the background filled with the configured 'bg' color
        // otherwise the transparent color will appear as black
        ImageSaveAlpha($this->gdimg_output, true);
        if ($this->is_alpha && phpthumb_functions::gd_version() >= 2) {

            ImageAlphaBlending($this->gdimg_output, false);
            $output_full_alpha = phpthumb_functions::ImageColorAllocateAlphaSafe($this->gdimg_output, 255, 255, 255, 127);
            ImageFilledRectangle($this->gdimg_output, 0, 0, $this->thumbnail_width, $this->thumbnail_height, $output_full_alpha);
        } else {

            $current_transparent_color = ImageColorTransparent($this->gdimg_source);
            if ($this->bg || (@$current_transparent_color >= 0)) {

                $this->config_background_hexcolor = ($this->bg ? $this->bg : $this->config_background_hexcolor);
                if (!phpthumb_functions::IsHexColor($this->config_background_hexcolor)) {
                    return $this->ErrorImage('Invalid hex color string "' . $this->config_background_hexcolor . '" for parameter "bg"');
                }
                $background_color = phpthumb_functions::ImageHexColorAllocate($this->gdimg_output, $this->config_background_hexcolor);
                ImageFilledRectangle($this->gdimg_output, 0, 0, $this->thumbnail_width, $this->thumbnail_height, $background_color);
            }
        }
        $this->DebugMessage('CreateGDoutput() returning canvas "' . $this->thumbnail_width . 'x' . $this->thumbnail_height . '"', __FILE__, __LINE__);
        return true;
    }

    function SetOrientationDependantWidthHeight() {
        $this->DebugMessage('SetOrientationDependantWidthHeight() starting with "' . $this->source_width . '"x"' . $this->source_height . '"', __FILE__, __LINE__);
        if ($this->source_height > $this->source_width) {
            // portrait
            $this->w = phpthumb_functions::OneOfThese($this->wp, $this->w, $this->ws, $this->wl);
            $this->h = phpthumb_functions::OneOfThese($this->hp, $this->h, $this->hs, $this->hl);
        } elseif ($this->source_height < $this->source_width) {
            // landscape
            $this->w = phpthumb_functions::OneOfThese($this->wl, $this->w, $this->ws, $this->wp);
            $this->h = phpthumb_functions::OneOfThese($this->hl, $this->h, $this->hs, $this->hp);
        } else {
            // square
            $this->w = phpthumb_functions::OneOfThese($this->ws, $this->w, $this->wl, $this->wp);
            $this->h = phpthumb_functions::OneOfThese($this->hs, $this->h, $this->hl, $this->hp);
        }
        //$this->w = round($this->w ? $this->w : (($this->h && $this->source_height) ? $this->h * $this->source_width  / $this->source_height : $this->w));
        //$this->h = round($this->h ? $this->h : (($this->w && $this->source_width)  ? $this->w * $this->source_height / $this->source_width  : $this->h));
        $this->DebugMessage('SetOrientationDependantWidthHeight() setting w="' . intval($this->w) . '", h="' . intval($this->h) . '"', __FILE__, __LINE__);
        return true;
    }

    function ExtractEXIFgetImageSize() {
        $this->DebugMessage('starting ExtractEXIFgetImageSize()', __FILE__, __LINE__);

        if (preg_match('#^http:#i', $this->src) && !$this->sourceFilename && $this->rawImageData) {
            !$this->SourceDataToTempFile();
        }
        if (is_null($this->getimagesizeinfo)) {
            if ($this->sourceFilename) {
                $this->getimagesizeinfo = @GetImageSize($this->sourceFilename);
                $this->source_width = $this->getimagesizeinfo[0];
                $this->source_height = $this->getimagesizeinfo[1];
                $this->DebugMessage('GetImageSize(' . $this->sourceFilename . ') says image is ' . $this->source_width . 'x' . $this->source_height, __FILE__, __LINE__);
            } else {
                $this->DebugMessage('skipping GetImageSize() because $this->sourceFilename is empty', __FILE__, __LINE__);
            }
        } else {
            $this->DebugMessage('skipping GetImageSize() because !is_null($this->getimagesizeinfo)', __FILE__, __LINE__);
        }

        if (is_resource($this->gdimg_source)) {

            $this->source_width = ImageSX($this->gdimg_source);
            $this->source_height = ImageSY($this->gdimg_source);

            $this->SetOrientationDependantWidthHeight();
        } elseif ($this->rawImageData && !$this->sourceFilename) {

            if ($this->SourceImageIsTooLarge($this->source_width, $this->source_height)) {
                $this->DebugMessage('NOT bypassing EXIF and GetImageSize sections because source image is too large for GD (' . $this->source_width . 'x' . $this->source_width . '=' . ($this->source_width * $this->source_height * 5) . 'MB)', __FILE__, __LINE__);
            } else {
                $this->DebugMessage('bypassing EXIF and GetImageSize sections because $this->rawImageData is set, and $this->sourceFilename is not set, and source image is not too large for GD (' . $this->source_width . 'x' . $this->source_width . '=' . ($this->source_width * $this->source_height * 5) . 'MB)', __FILE__, __LINE__);
            }
        }

        if (is_null($this->getimagesizeinfo)) {
            $this->getimagesizeinfo = @GetImageSize($this->sourceFilename);
        }

        if (!empty($this->getimagesizeinfo)) {
            // great
            $this->getimagesizeinfo['filesize'] = @filesize($this->sourceFilename);
        } elseif (!$this->rawImageData) {
            $this->DebugMessage('GetImageSize("' . $this->sourceFilename . '") failed', __FILE__, __LINE__);
        }

        if ($this->config_prefer_imagemagick) {
            if ($this->ImageMagickThumbnailToGD()) {
                return true;
            }
            $this->DebugMessage('ImageMagickThumbnailToGD() failed', __FILE__, __LINE__);
        }

        $this->source_width = $this->getimagesizeinfo[0];
        $this->source_height = $this->getimagesizeinfo[1];

        $this->SetOrientationDependantWidthHeight();

        if (phpthumb_functions::version_compare_replacement(phpversion(), '4.2.0', '>=') && function_exists('exif_read_data')) {
            switch ($this->getimagesizeinfo[2]) {
                case IMAGETYPE_JPEG:
                case IMAGETYPE_TIFF_II:
                case IMAGETYPE_TIFF_MM:
                    $this->exif_raw_data = @exif_read_data($this->sourceFilename, 0, true);
                    break;
            }
        }
        if (function_exists('exif_thumbnail') && ($this->getimagesizeinfo[2] == IMAGETYPE_JPEG)) {
            // Extract EXIF info from JPEGs

            $this->exif_thumbnail_width = '';
            $this->exif_thumbnail_height = '';
            $this->exif_thumbnail_type = '';

            // The parameters width, height and imagetype are available since PHP v4.3.0
            if (phpthumb_functions::version_compare_replacement(phpversion(), '4.3.0', '>=')) {

                $this->exif_thumbnail_data = @exif_thumbnail($this->sourceFilename, $this->exif_thumbnail_width, $this->exif_thumbnail_height, $this->exif_thumbnail_type);
            } else {

                // older versions of exif_thumbnail output an error message but NOT return false on failure
                ob_start();
                $this->exif_thumbnail_data = exif_thumbnail($this->sourceFilename);
                $exit_thumbnail_error = ob_get_contents();
                ob_end_clean();
                if (!$exit_thumbnail_error && $this->exif_thumbnail_data) {

                    if ($gdimg_exif_temp = $this->ImageCreateFromStringReplacement($this->exif_thumbnail_data, false)) {
                        $this->exif_thumbnail_width = ImageSX($gdimg_exif_temp);
                        $this->exif_thumbnail_height = ImageSY($gdimg_exif_temp);
                        $this->exif_thumbnail_type = 2; // (2 == JPEG) before PHP v4.3.0 only JPEG format EXIF thumbnails are returned
                        unset($gdimg_exif_temp);
                    } else {
                        return $this->ErrorImage('Failed - $this->ImageCreateFromStringReplacement($this->exif_thumbnail_data) in ' . __FILE__ . ' on line ' . __LINE__);
                    }
                }
            }
        } elseif (!function_exists('exif_thumbnail')) {

            $this->DebugMessage('exif_thumbnail() does not exist, cannot extract EXIF thumbnail', __FILE__, __LINE__);
        }

        $this->DebugMessage('EXIF thumbnail extraction: (size=' . strlen($this->exif_thumbnail_data) . '; type="' . $this->exif_thumbnail_type . '"; ' . intval($this->exif_thumbnail_width) . 'x' . intval($this->exif_thumbnail_height) . ')', __FILE__, __LINE__);

        // see if EXIF thumbnail can be used directly with no processing
        if ($this->config_use_exif_thumbnail_for_speed && $this->exif_thumbnail_data) {
            while (true) {
                if (!$this->xto) {
                    $source_ar = $this->source_width / $this->source_height;
                    $exif_ar = $this->exif_thumbnail_width / $this->exif_thumbnail_height;
                    if (number_format($source_ar, 2) != number_format($exif_ar, 2)) {
                        $this->DebugMessage('not using EXIF thumbnail because $source_ar != $exif_ar (' . $source_ar . ' != ' . $exif_ar . ')', __FILE__, __LINE__);
                        break;
                    }
                    if ($this->w && ($this->w != $this->exif_thumbnail_width)) {
                        $this->DebugMessage('not using EXIF thumbnail because $this->w != $this->exif_thumbnail_width (' . $this->w . ' != ' . $this->exif_thumbnail_width . ')', __FILE__, __LINE__);
                        break;
                    }
                    if ($this->h && ($this->h != $this->exif_thumbnail_height)) {
                        $this->DebugMessage('not using EXIF thumbnail because $this->h != $this->exif_thumbnail_height (' . $this->h . ' != ' . $this->exif_thumbnail_height . ')', __FILE__, __LINE__);
                        break;
                    }
                    $CannotBeSetParameters = array('sx', 'sy', 'sh', 'sw', 'far', 'bg', 'bc', 'fltr', 'phpThumbDebug');
                    foreach ($CannotBeSetParameters as $parameter) {
                        if ($this->$parameter) {
                            break 2;
                        }
                    }
                }

                $this->DebugMessage('setting $this->gdimg_source = $this->ImageCreateFromStringReplacement($this->exif_thumbnail_data)', __FILE__, __LINE__);
                $this->gdimg_source = $this->ImageCreateFromStringReplacement($this->exif_thumbnail_data);
                $this->source_width = ImageSX($this->gdimg_source);
                $this->source_height = ImageSY($this->gdimg_source);
                return true;
            }
        }

        if (($this->config_max_source_pixels > 0) && (($this->source_width * $this->source_height) > $this->config_max_source_pixels)) {

            // Source image is larger than would fit in available PHP memory.
            // If ImageMagick is installed, use it to generate the thumbnail.
            // Else, if an EXIF thumbnail is available, use that as the source image.
            // Otherwise, no choice but to fail with an error message
            $this->DebugMessage('image is ' . $this->source_width . 'x' . $this->source_height . ' and therefore contains more pixels (' . ($this->source_width * $this->source_height) . ') than $this->config_max_source_pixels setting (' . $this->config_max_source_pixels . ')', __FILE__, __LINE__);
            if (!$this->config_prefer_imagemagick && $this->ImageMagickThumbnailToGD()) {
                // excellent, we have a thumbnailed source image
                return true;
            }
        }
        return true;
    }

    function SetCacheFilename() {
        if (!is_null($this->cache_filename)) {
            $this->DebugMessage('$this->cache_filename already set, skipping SetCacheFilename()', __FILE__, __LINE__);
            return true;
        }
        $this->setOutputFormat();
        $this->setCacheDirectory();

        if (!$this->config_cache_directory) {
            $this->DebugMessage('SetCacheFilename() failed because $this->config_cache_directory is empty', __FILE__, __LINE__);
            return false;
        }

        if (!$this->sourceFilename && !$this->rawImageData && $this->src) {
            $this->sourceFilename = $this->ResolveFilenameToAbsolute($this->src);
        }
        
        $this->cache_filename = $this->config_cache_directory . DIRECTORY_SEPARATOR . md5(str_replace($_REQUEST['src'],'',$_SERVER['REQUEST_URI'])).DIRECTORY_SEPARATOR.  filesize($this->src).DIRECTORY_SEPARATOR.basename($_REQUEST['src']);
        return true;

        if ($this->config_cache_default_only_suffix && $this->sourceFilename) {
            // simplified cache filenames:
            // only use default parameters in phpThumb.config.php
            // substitute source filename into * in $this->config_cache_default_only_suffix
            // (eg: '*_thumb' becomes 'picture_thumb.jpg')
            if (strpos($this->config_cache_default_only_suffix, '*') === false) {
                $this->DebugMessage('aborting simplified caching filename because no * in "' . $this->config_cache_default_only_suffix . '"', __FILE__, __LINE__);
            } else {
                preg_match('#(.+)(\\.[a-z0-9]+)?$#i', basename($this->sourceFilename), $matches);
                $this->cache_filename = $this->config_cache_directory . DIRECTORY_SEPARATOR . rawurlencode(str_replace('*', @$matches[1], $this->config_cache_default_only_suffix)) . '.' . strtolower($this->thumbnailFormat);
                return true;
            }
        }

        $this->cache_filename = '';
        $broad_directory_name = '';
        if ($this->new) {
            $broad_directory_name = strtolower(md5($this->new));
            $this->cache_filename .= '_new' . $broad_directory_name;
        } elseif ($this->md5s) {
            // source image MD5 hash provided
            $this->DebugMessage('SetCacheFilename() _raw set from $this->md5s = "' . $this->md5s . '"', __FILE__, __LINE__);
            $broad_directory_name = $this->md5s;
            $this->cache_filename .= '_raw' . $this->md5s;
        } elseif (!$this->src && $this->rawImageData) {
            $this->DebugMessage('SetCacheFilename() _raw set from md5($this->rawImageData) = "' . md5($this->rawImageData) . '"', __FILE__, __LINE__);
            $broad_directory_name = strtolower(md5($this->rawImageData));
            $this->cache_filename .= '_raw' . $broad_directory_name;
        } else {
            $this->DebugMessage('SetCacheFilename() _src set from md5($this->sourceFilename) "' . $this->sourceFilename . '" = "' . md5($this->sourceFilename) . '"', __FILE__, __LINE__);
            $broad_directory_name = strtolower(md5($this->sourceFilename));
            $this->cache_filename .= '_src' . $broad_directory_name;
        }
        if (@$_SERVER['HTTP_REFERER'] && $this->config_nooffsitelink_enabled) {
            $parsed_url1 = @phpthumb_functions::ParseURLbetter(@$_SERVER['HTTP_REFERER']);
            $parsed_url2 = @phpthumb_functions::ParseURLbetter('http://' . @$_SERVER['HTTP_HOST']);
            if (@$parsed_url1['host'] && @$parsed_url2['host'] && ($parsed_url1['host'] != $parsed_url2['host'])) {
                // include "_offsite" only if nooffsitelink_enabled and if referrer doesn't match the domain of the current server
                $this->cache_filename .= '_offsite';
            }
        }

        $ParametersString = '';
        if ($this->fltr && is_array($this->fltr)) {
            $ParametersString .= '_fltr' . implode('_fltr', $this->fltr);
        }
        $FilenameParameters1 = array('ar', 'bg', 'bc', 'far', 'sx', 'sy', 'sw', 'sh', 'zc');
        foreach ($FilenameParameters1 as $key) {
            if ($this->$key) {
                $ParametersString .= '_' . $key . $this->$key;
            }
        }
        $FilenameParameters2 = array('h', 'w', 'wl', 'wp', 'ws', 'hp', 'hs', 'xto', 'ra', 'iar', 'aoe', 'maxb', 'sfn', 'dpi');
        foreach ($FilenameParameters2 as $key) {
            if ($this->$key) {
                $ParametersString .= '_' . $key . intval($this->$key);
            }
        }
        if ($this->thumbnailFormat == 'jpeg') {
            // only JPEG output has variable quality option
            $ParametersString .= '_q' . intval($this->thumbnailQuality);
        }
        $this->DebugMessage('SetCacheFilename() _par set from md5(' . $ParametersString . ')', __FILE__, __LINE__);
        $this->cache_filename .= '_par' . strtolower(md5($ParametersString));

        if ($this->md5s) {
            // source image MD5 hash provided
            // do not source image modification date --
            // cached image will be used even if file was modified or removed
        } elseif (!$this->config_cache_source_filemtime_ignore_remote && preg_match('#^(f|ht)tps?\://#i', $this->src)) {
            $this->cache_filename .= '_dat' . intval(phpthumb_functions::filedate_remote($this->src));
        } elseif (!$this->config_cache_source_filemtime_ignore_local && $this->src && !$this->rawImageData) {
            $this->cache_filename .= '_dat' . intval(@filemtime($this->sourceFilename));
        }

        $this->cache_filename .= '.' . strtolower($this->thumbnailFormat);
        $broad_directories = '';
        for ($i = 0; $i < $this->config_cache_directory_depth; $i++) {
            $broad_directories .= DIRECTORY_SEPARATOR . substr($broad_directory_name, 0, $i + 1);
        }

        $this->cache_filename = $this->config_cache_directory . $broad_directories . DIRECTORY_SEPARATOR . $this->config_cache_prefix . rawurlencode($this->cache_filename);
        return true;
    }

    function SourceImageIsTooLarge($width, $height) {
        if (!$this->config_max_source_pixels) {
            return false;
        }
        if (function_exists('memory_get_usage')) {
            $available_memory = max(intval(ini_get('memory_limit')), intval(get_cfg_var('memory_limit'))) * 1048576;
            $available_memory -= memory_get_usage();
            return (bool) (($width * $height * 5) > $available_memory);
        }
        return (bool) (($width * $height) > $this->config_max_source_pixels);
    }

    function ImageCreateFromFilename($filename) {
        // try to create GD image source directly via GD, if possible,
        // rather than buffering to memory and creating with ImageCreateFromString
        $ImageCreateWasAttempted = false;
        $gd_image = false;

        $this->DebugMessage('starting ImageCreateFromFilename(' . $filename . ')', __FILE__, __LINE__);
        if ($filename && ($getimagesizeinfo = @GetImageSize($filename))) {
            if (!$this->SourceImageIsTooLarge($getimagesizeinfo[0], $getimagesizeinfo[1])) {
                $ImageCreateFromFunction = array(
                    1 => 'ImageCreateFromGIF',
                    2 => 'ImageCreateFromJPEG',
                    3 => 'ImageCreateFromPNG',
                    15 => 'ImageCreateFromWBMP',
                );
                $this->DebugMessage('ImageCreateFromFilename found ($getimagesizeinfo[2]==' . @$getimagesizeinfo[2] . ')', __FILE__, __LINE__);
                switch (@$getimagesizeinfo[2]) {
                    case 1:  // GIF
                    case 2:  // JPEG
                    case 3:  // PNG
                    case 15: // WBMP
                        $ImageCreateFromFunctionName = $ImageCreateFromFunction[$getimagesizeinfo[2]];
                        if (function_exists($ImageCreateFromFunctionName)) {
                            $this->DebugMessage('Calling ' . $ImageCreateFromFunctionName . '(' . $filename . ')', __FILE__, __LINE__);
                            $ImageCreateWasAttempted = true;
                            $gd_image = $ImageCreateFromFunctionName($filename);
                        } else {
                            $this->DebugMessage('NOT calling ' . $ImageCreateFromFunctionName . '(' . $filename . ') because !function_exists(' . $ImageCreateFromFunctionName . ')', __FILE__, __LINE__);
                        }
                        break;

                    case 4:  // SWF
                    case 5:  // PSD
                    case 6:  // BMP
                    case 7:  // TIFF (LE)
                    case 8:  // TIFF (BE)
                    case 9:  // JPC
                    case 10: // JP2
                    case 11: // JPX
                    case 12: // JB2
                    case 13: // SWC
                    case 14: // IFF
                    case 16: // XBM
                        $this->DebugMessage('No built-in image creation function for image type "' . @$getimagesizeinfo[2] . '" ($getimagesizeinfo[2])', __FILE__, __LINE__);
                        break;

                    default:
                        $this->DebugMessage('Unknown value for $getimagesizeinfo[2]: "' . @$getimagesizeinfo[2] . '"', __FILE__, __LINE__);
                        break;
                }
            } else {
                $this->DebugMessage('image is ' . $getimagesizeinfo[0] . 'x' . $getimagesizeinfo[1] . ' and therefore contains more pixels (' . ($getimagesizeinfo[0] * $getimagesizeinfo[1]) . ') than $this->config_max_source_pixels setting (' . $this->config_max_source_pixels . ')', __FILE__, __LINE__);
                return false;
            }
        } else {
            $this->DebugMessage('empty $filename or GetImageSize(' . $filename . ') failed', __FILE__, __LINE__);
        }

        if (!$gd_image) {
            // cannot create from filename, attempt to create source image with ImageCreateFromString, if possible
            if ($ImageCreateWasAttempted) {
                $this->DebugMessage(@$ImageCreateFromFunctionName . '() was attempted but FAILED', __FILE__, __LINE__);
            }
            $this->DebugMessage('Populating $rawimagedata', __FILE__, __LINE__);
            $rawimagedata = '';
            if ($fp = @fopen($filename, 'rb')) {
                $filesize = filesize($filename);
                $blocksize = 8192;
                $blockreads = ceil($filesize / $blocksize);
                for ($i = 0; $i < $blockreads; $i++) {
                    $rawimagedata .= fread($fp, $blocksize);
                }
                fclose($fp);
            } else {
                $this->DebugMessage('cannot fopen(' . $filename . ')', __FILE__, __LINE__);
            }
            if ($rawimagedata) {
                $this->DebugMessage('attempting ImageCreateFromStringReplacement($rawimagedata (' . strlen($rawimagedata) . ' bytes), true)', __FILE__, __LINE__);
                $gd_image = $this->ImageCreateFromStringReplacement($rawimagedata, true);
            }
        }
        return $gd_image;
    }

    function SourceImageToGD() {
        if (is_resource($this->gdimg_source)) {
            $this->source_width = ImageSX($this->gdimg_source);
            $this->source_height = ImageSY($this->gdimg_source);
            $this->DebugMessage('skipping SourceImageToGD() because $this->gdimg_source is already a resource (' . $this->source_width . 'x' . $this->source_height . ')', __FILE__, __LINE__);
            return true;
        }
        $this->DebugMessage('starting SourceImageToGD()', __FILE__, __LINE__);

        if ($this->config_prefer_imagemagick) {
            if (empty($this->sourceFilename) && !empty($this->rawImageData)) {
                $this->DebugMessage('Copying raw image data to temp file and trying again with ImageMagick', __FILE__, __LINE__);
                if ($tempnam = $this->phpThumb_tempnam()) {
                    if (file_put_contents($tempname, $this->rawImageData)) {
                        $this->sourceFilename = $tempnam;
                        if ($this->ImageMagickThumbnailToGD()) {
                            // excellent, we have a thumbnailed source image
                            $this->DebugMessage('ImageMagickThumbnailToGD() succeeded', __FILE__, __LINE__);
                        } else {
                            $this->DebugMessage('ImageMagickThumbnailToGD() failed', __FILE__, __LINE__);
                        }
                    } else {
                        $this->DebugMessage('failed to put $this->rawImageData into temp file "' . $tempnam . '"', __FILE__, __LINE__);
                    }
                } else {
                    $this->DebugMessage('failed to generate temp file name', __FILE__, __LINE__);
                }
            }
        }
        if (!$this->gdimg_source && $this->rawImageData) {

            if ($this->SourceImageIsTooLarge($this->source_width, $this->source_height)) {
                $memory_get_usage = (function_exists('memory_get_usage') ? memory_get_usage() : 0);
                return $this->ErrorImage('Source image is too large (' . $this->source_width . 'x' . $this->source_height . ' = ' . number_format($this->source_width * $this->source_height / 1000000, 1) . 'Mpx, max=' . number_format($this->config_max_source_pixels / 1000000, 1) . 'Mpx) for GD creation (either install ImageMagick or increase PHP memory_limit to at least ' . ceil(($memory_get_usage + (5 * $this->source_width * $this->source_height)) / 1048576) . 'M).');
            }
            if ($this->md5s && ($this->md5s != md5($this->rawImageData))) {
                return $this->ErrorImage('$this->md5s != md5($this->rawImageData)' . "\n" . '"' . $this->md5s . '" != ' . "\n" . '"' . md5($this->rawImageData) . '"');
            }
            //if ($this->issafemode) {
            //	return $this->ErrorImage('Cannot generate thumbnails from raw image data when PHP SAFE_MODE enabled');
            //}
            $this->gdimg_source = $this->ImageCreateFromStringReplacement($this->rawImageData);
            if (!$this->gdimg_source) {
                if (substr($this->rawImageData, 0, 2) === 'BM') {
                    $this->getimagesizeinfo[2] = 6; // BMP
                } elseif (substr($this->rawImageData, 0, 4) === 'II' . "\x2A\x00") {
                    $this->getimagesizeinfo[2] = 7; // TIFF (littlendian)
                } elseif (substr($this->rawImageData, 0, 4) === 'MM' . "\x00\x2A") {
                    $this->getimagesizeinfo[2] = 8; // TIFF (bigendian)
                }
                $this->DebugMessage('SourceImageToGD.ImageCreateFromStringReplacement() failed with unknown image type "' . substr($this->rawImageData, 0, 4) . '" (' . phpthumb_functions::HexCharDisplay(substr($this->rawImageData, 0, 4)) . ')', __FILE__, __LINE__);
//				return $this->ErrorImage('Unknown image type identified by "'.substr($this->rawImageData, 0, 4).'" ('.phpthumb_functions::HexCharDisplay(substr($this->rawImageData, 0, 4)).') in SourceImageToGD()['.__LINE__.']');
            }
        } elseif (!$this->gdimg_source && $this->sourceFilename) {

            if ($this->md5s && ($this->md5s != phpthumb_functions::md5_file_safe($this->sourceFilename))) {
                return $this->ErrorImage('$this->md5s != md5(sourceFilename)' . "\n" . '"' . $this->md5s . '" != ' . "\n" . '"' . phpthumb_functions::md5_file_safe($this->sourceFilename) . '"');
            }
            switch (@$this->getimagesizeinfo[2]) {
                case 1:
                case 3:
                    // GIF or PNG input file may have transparency
                    $this->is_alpha = true;
                    break;
            }
            if (!$this->SourceImageIsTooLarge($this->source_width, $this->source_height)) {
                $this->gdimg_source = $this->ImageCreateFromFilename($this->sourceFilename);
            }
        }

        while (true) {
            if ($this->gdimg_source) {
                $this->DebugMessage('Not using EXIF thumbnail data because $this->gdimg_source is already set', __FILE__, __LINE__);
                break;
            }
            if (!$this->exif_thumbnail_data) {
                $this->DebugMessage('Not using EXIF thumbnail data because $this->exif_thumbnail_data is empty', __FILE__, __LINE__);
                break;
            }
            if (ini_get('safe_mode')) {
                if (!$this->SourceImageIsTooLarge($this->source_width, $this->source_height)) {
                    $this->DebugMessage('Using EXIF thumbnail data because source image too large and safe_mode enabled', __FILE__, __LINE__);
                    $this->aoe = true;
                } else {
                    break;
                }
            } else {
                if (!$this->config_use_exif_thumbnail_for_speed) {
                    $this->DebugMessage('Not using EXIF thumbnail data because $this->config_use_exif_thumbnail_for_speed is FALSE', __FILE__, __LINE__);
                    break;
                }
                if (($this->thumbnailCropX != 0) || ($this->thumbnailCropY != 0)) {
                    $this->DebugMessage('Not using EXIF thumbnail data because source cropping is enabled (' . $this->thumbnailCropX . ',' . $this->thumbnailCropY . ')', __FILE__, __LINE__);
                    break;
                }
                if (($this->w > $this->exif_thumbnail_width) || ($this->h > $this->exif_thumbnail_height)) {
                    $this->DebugMessage('Not using EXIF thumbnail data because EXIF thumbnail is too small (' . $this->exif_thumbnail_width . 'x' . $this->exif_thumbnail_height . ' vs ' . $this->w . 'x' . $this->h . ')', __FILE__, __LINE__);
                    break;
                }
                $source_ar = $this->source_width / $this->source_height;
                $exif_ar = $this->exif_thumbnail_width / $this->exif_thumbnail_height;
                if (number_format($source_ar, 2) != number_format($exif_ar, 2)) {
                    $this->DebugMessage('not using EXIF thumbnail because $source_ar != $exif_ar (' . $source_ar . ' != ' . $exif_ar . ')', __FILE__, __LINE__);
                    break;
                }
            }

            // EXIF thumbnail exists, and is equal to or larger than destination thumbnail, and will be use as source image
            $this->DebugMessage('Trying to use EXIF thumbnail as source image', __FILE__, __LINE__);

            if ($gdimg_exif_temp = $this->ImageCreateFromStringReplacement($this->exif_thumbnail_data, false)) {

                $this->DebugMessage('Successfully using EXIF thumbnail as source image', __FILE__, __LINE__);
                $this->gdimg_source = $gdimg_exif_temp;
                $this->source_width = $this->exif_thumbnail_width;
                $this->source_height = $this->exif_thumbnail_height;
                $this->thumbnailCropW = $this->source_width;
                $this->thumbnailCropH = $this->source_height;
                return true;
            } else {
                $this->DebugMessage('$this->ImageCreateFromStringReplacement($this->exif_thumbnail_data, false) failed', __FILE__, __LINE__);
            }

            break;
        }

        if (!$this->gdimg_source) {
            $this->DebugMessage('$this->gdimg_source is still empty', __FILE__, __LINE__);

            $this->DebugMessage('ImageMagickThumbnailToGD() failed', __FILE__, __LINE__);

            $imageHeader = '';
            $gd_info = gd_info();
            $GDreadSupport = false;
            switch (@$this->getimagesizeinfo[2]) {
                case 1:
                    $imageHeader = 'Content-Type: image/gif';
                    $GDreadSupport = (bool) @$gd_info['GIF Read Support'];
                    break;
                case 2:
                    $imageHeader = 'Content-Type: image/jpeg';
                    $GDreadSupport = (bool) @$gd_info['JPG Support'];
                    break;
                case 3:
                    $imageHeader = 'Content-Type: image/png';
                    $GDreadSupport = (bool) @$gd_info['PNG Support'];
                    break;
            }
            if ($imageHeader) {
                // cannot create image for whatever reason (maybe ImageCreateFromJPEG et al are not available?)
                // and ImageMagick is not available either, no choice but to output original (not resized/modified) data and exit
                if ($this->config_error_die_on_source_failure) {
                    $errormessages = array();
                    $errormessages[] = 'All attempts to create GD image source failed.';
                    if ($this->fatalerror) {
                        $errormessages[] = $this->fatalerror;
                    }
                    if ($this->issafemode) {
                        $errormessages[] = 'Safe Mode enabled, therefore ImageMagick is unavailable. (disable Safe Mode if possible)';
                    } elseif (!$this->ImageMagickVersion()) {
                        $errormessages[] = 'ImageMagick is not installed (it is highly recommended that you install it).';
                    }
                    if ($this->SourceImageIsTooLarge($this->getimagesizeinfo[0], $this->getimagesizeinfo[1])) {
                        $memory_get_usage = (function_exists('memory_get_usage') ? memory_get_usage() : 0);
                        $errormessages[] = 'Source image is too large (' . $this->getimagesizeinfo[0] . 'x' . $this->getimagesizeinfo[1] . ' = ' . number_format($this->getimagesizeinfo[0] * $this->getimagesizeinfo[1] / 1000000, 1) . 'Mpx, max=' . number_format($this->config_max_source_pixels / 1000000, 1) . 'Mpx) for GD creation (either install ImageMagick or increase PHP memory_limit to at least ' . ceil(($memory_get_usage + (5 * $this->getimagesizeinfo[0] * $this->getimagesizeinfo[1])) / 1048576) . 'M).';
                    } elseif (!$GDreadSupport) {
                        $errormessages[] = 'GD does not have read support for "' . $imageHeader . '".';
                    } else {
                        $errormessages[] = 'Source image probably corrupt.';
                    }
                    $this->ErrorImage(implode("\n", $errormessages));
                } else {
                    $this->DebugMessage('All attempts to create GD image source failed (' . (ini_get('safe_mode') ? 'Safe Mode enabled, ImageMagick unavailable and source image probably too large for GD' : ($GDreadSupport ? 'source image probably corrupt' : 'GD does not have read support for "' . $imageHeader . '"')) . '), cannot generate thumbnail');
                    //$this->DebugMessage('All attempts to create GD image source failed ('.($GDreadSupport ? 'source image probably corrupt' : 'GD does not have read support for "'.$imageHeader.'"').'), outputing raw image', __FILE__, __LINE__);
                    //if (!$this->phpThumbDebug) {
                    //	header($imageHeader);
                    //	echo $this->rawImageData;
                    //	exit;
                    //}
                    return false;
                }
            }

            //switch (substr($this->rawImageData, 0, 2)) {
            //	case 'BM':
            switch (@$this->getimagesizeinfo[2]) {
                case 6:
                    ob_start();
                    if (!@include_once(dirname(__FILE__) . '/phpthumb.bmp.php')) {
                        ob_end_clean();
                        return $this->ErrorImage('include_once(' . dirname(__FILE__) . '/phpthumb.bmp.php) failed');
                    }
                    ob_end_clean();
                    if ($fp = @fopen($this->sourceFilename, 'rb')) {
                        $this->rawImageData = '';
                        while (!feof($fp)) {
                            $this->rawImageData .= fread($fp, 32768);
                        }
                        fclose($fp);
                    }
                    $phpthumb_bmp = new phpthumb_bmp();
                    $this->gdimg_source = $phpthumb_bmp->phpthumb_bmp2gd($this->rawImageData, (phpthumb_functions::gd_version() >= 2.0));
                    unset($phpthumb_bmp);
                    if ($this->gdimg_source) {
                        $this->DebugMessage('$phpthumb_bmp->phpthumb_bmp2gd() succeeded', __FILE__, __LINE__);
                    } else {
                        return $this->ErrorImage($this->ImageMagickVersion() ? 'ImageMagick failed on BMP source conversion' : 'phpthumb_bmp2gd() failed');
                    }
                    break;
                //}
                //switch (substr($this->rawImageData, 0, 4)) {
                //	case 'II'."\x2A\x00":
                //	case 'MM'."\x00\x2A":
                case 7:
                case 8:
                    return $this->ErrorImage($this->ImageMagickVersion() ? 'ImageMagick failed on TIFF source conversion' : 'ImageMagick is unavailable and phpThumb() does not support TIFF source images without it');
                    break;

                //case "\xD7\xCD\xC6\x9A":
                //	return $this->ErrorImage($this->ImageMagickVersion() ? 'ImageMagick failed on WMF source conversion' : 'ImageMagick is unavailable and phpThumb() does not support WMF source images without it');
                //	break;
            }

            if (!$this->gdimg_source) {
                $HeaderFourBytes = '';
                if ($this->rawImageData) {
                    $HeaderFourBytes = substr($this->rawImageData, 0, 4);
                } elseif ($this->sourceFilename) {
                    if ($fp = @fopen($this->sourceFilename, 'rb')) {
                        $HeaderFourBytes = fread($fp, 4);
                        fclose($fp);
                    } else {
                        return $this->ErrorImage('failed to open "' . $this->sourceFilename . '" SourceImageToGD() [' . __LINE__ . ']');
                    }
                } else {
                    return $this->ErrorImage('Unable to create image, neither filename nor image data suppplied in SourceImageToGD() [' . __LINE__ . ']');
                }
                if (!$this->ImageMagickVersion() && !phpthumb_functions::gd_version()) {
                    return $this->ErrorImage('Neither GD nor ImageMagick seem to be installed on this server. At least one (preferably GD), or better both, MUST be installed for phpThumb to work.');
                } elseif ($HeaderFourBytes == "\xD7\xCD\xC6\x9A") { // WMF
                    return $this->ErrorImage($this->ImageMagickVersion() ? 'ImageMagick failed on WMF source conversion' : 'ImageMagick is unavailable and phpThumb() does not support WMF source images without it');
                } elseif ($HeaderFourBytes == '%PDF') { // "%PDF"
                    return $this->ErrorImage($this->ImageMagickVersion() ? 'ImageMagick and GhostScript are both required for PDF source images; GhostScript may not be properly configured' : 'ImageMagick and/or GhostScript are unavailable and phpThumb() does not support PDF source images without them');
                } elseif (substr($HeaderFourBytes, 0, 3) == "\xFF\xD8\xFF") { // JPEG
                    return $this->ErrorImage('Image (JPEG) is too large for PHP-GD memory_limit, please install ImageMagick or increase php.ini memory_limit setting');
                } elseif ($HeaderFourBytes == '%PNG') { // "%PNG"
                    return $this->ErrorImage('Image (PNG) is too large for PHP-GD memory_limit, please install ImageMagick or increase php.ini memory_limit setting');
                } elseif (substr($HeaderFourBytes, 0, 3) == 'GIF') { // GIF
                    return $this->ErrorImage('Image (GIF) is too large for PHP-GD memory_limit, please install ImageMagick or increase php.ini memory_limit setting');
                }
                return $this->ErrorImage('Unknown image type identified by "' . $HeaderFourBytes . '" (' . phpthumb_functions::HexCharDisplay($HeaderFourBytes) . ') in SourceImageToGD() [' . __LINE__ . ']');
            }
        }

        if (!$this->gdimg_source) {
            if ($gdimg_exif_temp = $this->ImageCreateFromStringReplacement($this->exif_thumbnail_data, false)) {
                $this->DebugMessage('All other attempts failed, but successfully using EXIF thumbnail as source image', __FILE__, __LINE__);
                $this->gdimg_source = $gdimg_exif_temp;
                // override allow-enlarging setting if EXIF thumbnail is the only source available
                // otherwise thumbnails larger than the EXIF thumbnail will be created at EXIF size
                $this->aoe = true;
                return true;
            }
            return false;
        }

        $this->source_width = ImageSX($this->gdimg_source);
        $this->source_height = ImageSY($this->gdimg_source);
        return true;
    }

    function phpThumbDebugVarDump($var) {
        if (is_null($var)) {
            return 'NULL';
        } elseif (is_bool($var)) {
            return ($var ? 'TRUE' : 'FALSE');
        } elseif (is_string($var)) {
            return 'string(' . strlen($var) . ')' . str_repeat(' ', max(0, 3 - strlen(strlen($var)))) . ' "' . $var . '"';
        } elseif (is_int($var)) {
            return 'integer     ' . $var;
        } elseif (is_float($var)) {
            return 'float       ' . $var;
        } elseif (is_array($var)) {
            ob_start();
            var_dump($var);
            $vardumpoutput = ob_get_contents();
            ob_end_clean();
            return strtr($vardumpoutput, "\n\r\t", '   ');
        }
        return gettype($var);
    }

    function phpThumbDebug($level='') {
        if ($level && ($this->phpThumbDebug !== $level)) {
            return true;
        }
        if ($this->config_disable_debug) {
            return $this->ErrorImage('phpThumbDebug disabled');
        }

        $FunctionsExistance = array('exif_thumbnail', 'gd_info', 'image_type_to_mime_type', 'GetImageSize', 'ImageCopyResampled', 'ImageCopyResized', 'ImageCreate', 'ImageCreateFromString', 'ImageCreateTrueColor', 'ImageIsTrueColor', 'ImageRotate', 'ImageTypes', 'version_compare', 'ImageCreateFromGIF', 'ImageCreateFromJPEG', 'ImageCreateFromPNG', 'ImageCreateFromWBMP', 'ImageCreateFromXBM', 'ImageCreateFromXPM', 'ImageCreateFromString', 'ImageCreateFromGD', 'ImageCreateFromGD2', 'ImageCreateFromGD2Part', 'ImageJPEG', 'ImageGIF', 'ImagePNG', 'ImageWBMP');
        $ParameterNames = array('src', 'new', 'w', 'h', 'f', 'q', 'sx', 'sy', 'sw', 'sh', 'far', 'bg', 'bc', 'file', 'goto', 'err', 'xto', 'ra', 'ar', 'aoe', 'iar', 'maxb');
        $ConfigVariableNames = array('document_root', 'temp_directory', 'output_format', 'output_maxwidth', 'output_maxheight', 'error_message_image_default', 'error_bgcolor', 'error_textcolor', 'error_fontsize', 'error_die_on_error', 'error_silent_die_on_error', 'error_die_on_source_failure', 'nohotlink_enabled', 'nohotlink_valid_domains', 'nohotlink_erase_image', 'nohotlink_text_message', 'nooffsitelink_enabled', 'nooffsitelink_valid_domains', 'nooffsitelink_require_refer', 'nooffsitelink_erase_image', 'nooffsitelink_text_message', 'high_security_enabled', 'allow_src_above_docroot', 'allow_src_above_phpthumb', 'max_source_pixels', 'use_exif_thumbnail_for_speed', 'border_hexcolor', 'background_hexcolor', 'ttf_directory', 'disable_pathinfo_parsing', 'disable_imagecopyresampled');
        $OtherVariableNames = array('phpThumbDebug', 'thumbnailQuality', 'thumbnailFormat', 'gdimg_output', 'gdimg_source', 'sourceFilename', 'source_width', 'source_height', 'thumbnailCropX', 'thumbnailCropY', 'thumbnailCropW', 'thumbnailCropH', 'exif_thumbnail_width', 'exif_thumbnail_height', 'exif_thumbnail_type', 'thumbnail_width', 'thumbnail_height', 'thumbnail_image_width', 'thumbnail_image_height');

        $DebugOutput = array();
        $DebugOutput[] = 'phpThumb() version          = ' . $this->phpthumb_version;
        $DebugOutput[] = 'phpversion()                = ' . @phpversion();
        $DebugOutput[] = 'PHP_OS                      = ' . PHP_OS;
        $DebugOutput[] = '$_SERVER[SERVER_SOFTWARE]   = ' . @$_SERVER['SERVER_SOFTWARE'];
        $DebugOutput[] = '__FILE__                    = ' . __FILE__;
        $DebugOutput[] = 'realpath(.)                 = ' . @realpath('.');
        $DebugOutput[] = '$_SERVER[PHP_SELF]          = ' . @$_SERVER['PHP_SELF'];
        $DebugOutput[] = '$_SERVER[HOST_NAME]         = ' . @$_SERVER['HOST_NAME'];
        $DebugOutput[] = '$_SERVER[HTTP_REFERER]      = ' . @$_SERVER['HTTP_REFERER'];
        $DebugOutput[] = '$_SERVER[QUERY_STRING]      = ' . @$_SERVER['QUERY_STRING'];
        $DebugOutput[] = '$_SERVER[PATH_INFO]         = ' . @$_SERVER['PATH_INFO'];
        $DebugOutput[] = '$_SERVER[DOCUMENT_ROOT]     = ' . @$_SERVER['DOCUMENT_ROOT'];
        $DebugOutput[] = 'getenv(DOCUMENT_ROOT)       = ' . @getenv('DOCUMENT_ROOT');
        $DebugOutput[] = '';

        $DebugOutput[] = 'get_magic_quotes_gpc()         = ' . $this->phpThumbDebugVarDump(@get_magic_quotes_gpc());
        $DebugOutput[] = 'get_magic_quotes_runtime()     = ' . $this->phpThumbDebugVarDump(@get_magic_quotes_runtime());
        $DebugOutput[] = 'error_reporting()              = ' . $this->phpThumbDebugVarDump(error_reporting());
        $DebugOutput[] = 'ini_get(error_reporting)       = ' . $this->phpThumbDebugVarDump(@ini_get('error_reporting'));
        $DebugOutput[] = 'ini_get(display_errors)        = ' . $this->phpThumbDebugVarDump(@ini_get('display_errors'));
        $DebugOutput[] = 'ini_get(allow_url_fopen)       = ' . $this->phpThumbDebugVarDump(@ini_get('allow_url_fopen'));
        $DebugOutput[] = 'ini_get(disable_functions)     = ' . $this->phpThumbDebugVarDump(@ini_get('disable_functions'));
        $DebugOutput[] = 'get_cfg_var(disable_functions) = ' . $this->phpThumbDebugVarDump(@get_cfg_var('disable_functions'));
        $DebugOutput[] = 'ini_get(safe_mode)             = ' . $this->phpThumbDebugVarDump(@ini_get('safe_mode'));
        $DebugOutput[] = 'ini_get(open_basedir)          = ' . $this->phpThumbDebugVarDump(@ini_get('open_basedir'));
        $DebugOutput[] = 'ini_get(max_execution_time)    = ' . $this->phpThumbDebugVarDump(@ini_get('max_execution_time'));
        $DebugOutput[] = 'ini_get(memory_limit)          = ' . $this->phpThumbDebugVarDump(@ini_get('memory_limit'));
        $DebugOutput[] = 'get_cfg_var(memory_limit)      = ' . $this->phpThumbDebugVarDump(@get_cfg_var('memory_limit'));
        $DebugOutput[] = 'memory_get_usage()             = ' . (function_exists('memory_get_usage') ? $this->phpThumbDebugVarDump(@memory_get_usage()) : 'n/a');
        $DebugOutput[] = '';

        $DebugOutput[] = '$this->config_prefer_imagemagick            = ' . $this->phpThumbDebugVarDump($this->config_prefer_imagemagick);
        $DebugOutput[] = '$this->config_imagemagick_path              = ' . $this->phpThumbDebugVarDump($this->config_imagemagick_path);
        $DebugOutput[] = '$this->ImageMagickWhichConvert()            = ' . $this->ImageMagickWhichConvert();
        $IMpathUsed = ($this->config_imagemagick_path ? $this->config_imagemagick_path : $this->ImageMagickWhichConvert());
        $DebugOutput[] = '[actual ImageMagick path used]              = ' . $this->phpThumbDebugVarDump($IMpathUsed);
        $DebugOutput[] = 'file_exists([actual ImageMagick path used]) = ' . $this->phpThumbDebugVarDump(@file_exists($IMpathUsed));
        $DebugOutput[] = 'ImageMagickVersion(false)                   = ' . $this->ImageMagickVersion(false);
        $DebugOutput[] = 'ImageMagickVersion(true)                    = ' . $this->ImageMagickVersion(true);
        $DebugOutput[] = '';

        $DebugOutput[] = '$this->config_cache_directory               = ' . $this->phpThumbDebugVarDump($this->config_cache_directory);
        $DebugOutput[] = '$this->config_cache_directory_depth         = ' . $this->phpThumbDebugVarDump($this->config_cache_directory_depth);
        $DebugOutput[] = '$this->config_cache_disable_warning         = ' . $this->phpThumbDebugVarDump($this->config_cache_disable_warning);
        $DebugOutput[] = '$this->config_cache_maxage                  = ' . $this->phpThumbDebugVarDump($this->config_cache_maxage);
        $DebugOutput[] = '$this->config_cache_maxsize                 = ' . $this->phpThumbDebugVarDump($this->config_cache_maxsize);
        $DebugOutput[] = '$this->config_cache_maxfiles                = ' . $this->phpThumbDebugVarDump($this->config_cache_maxfiles);
        $DebugOutput[] = '$this->config_cache_force_passthru          = ' . $this->phpThumbDebugVarDump($this->config_cache_force_passthru);
        $DebugOutput[] = '$this->cache_filename                       = ' . $this->phpThumbDebugVarDump($this->cache_filename);
        $DebugOutput[] = 'is_readable($this->config_cache_directory)  = ' . $this->phpThumbDebugVarDump(@is_readable($this->config_cache_directory));
        $DebugOutput[] = 'is_writable($this->config_cache_directory)  = ' . $this->phpThumbDebugVarDump(@is_writable($this->config_cache_directory));
        $DebugOutput[] = 'is_readable($this->cache_filename)          = ' . $this->phpThumbDebugVarDump(@is_readable($this->cache_filename));
        $DebugOutput[] = 'is_writable($this->cache_filename)          = ' . (@file_exists($this->cache_filename) ? $this->phpThumbDebugVarDump(@is_writable($this->cache_filename)) : 'n/a');
        $DebugOutput[] = '';

        foreach ($ConfigVariableNames as $varname) {
            $varname = 'config_' . $varname;
            $value = $this->$varname;
            $DebugOutput[] = '$this->' . str_pad($varname, 37, ' ', STR_PAD_RIGHT) . ' = ' . $this->phpThumbDebugVarDump($value);
        }
        $DebugOutput[] = '';
        foreach ($OtherVariableNames as $varname) {
            $value = $this->$varname;
            $DebugOutput[] = '$this->' . str_pad($varname, 27, ' ', STR_PAD_RIGHT) . ' = ' . $this->phpThumbDebugVarDump($value);
        }
        $DebugOutput[] = 'strlen($this->rawImageData)        = ' . strlen(@$this->rawImageData);
        $DebugOutput[] = 'strlen($this->exif_thumbnail_data) = ' . strlen(@$this->exif_thumbnail_data);
        $DebugOutput[] = '';

        foreach ($ParameterNames as $varname) {
            $value = $this->$varname;
            $DebugOutput[] = '$this->' . str_pad($varname, 4, ' ', STR_PAD_RIGHT) . ' = ' . $this->phpThumbDebugVarDump($value);
        }
        $DebugOutput[] = '';

        foreach ($FunctionsExistance as $functionname) {
            $DebugOutput[] = 'builtin_function_exists(' . $functionname . ')' . str_repeat(' ', 23 - strlen($functionname)) . ' = ' . $this->phpThumbDebugVarDump(phpthumb_functions::builtin_function_exists($functionname));
        }
        $DebugOutput[] = '';

        $gd_info = gd_info();
        foreach ($gd_info as $key => $value) {
            $DebugOutput[] = 'gd_info.' . str_pad($key, 34, ' ', STR_PAD_RIGHT) . ' = ' . $this->phpThumbDebugVarDump($value);
        }
        $DebugOutput[] = '';

        $exif_info = phpthumb_functions::exif_info();
        foreach ($exif_info as $key => $value) {
            $DebugOutput[] = 'exif_info.' . str_pad($key, 26, ' ', STR_PAD_RIGHT) . ' = ' . $this->phpThumbDebugVarDump($value);
        }
        $DebugOutput[] = '';

        if ($ApacheLookupURIarray = phpthumb_functions::ApacheLookupURIarray(dirname(@$_SERVER['PHP_SELF']))) {
            foreach ($ApacheLookupURIarray as $key => $value) {
                $DebugOutput[] = 'ApacheLookupURIarray.' . str_pad($key, 15, ' ', STR_PAD_RIGHT) . ' = ' . $this->phpThumbDebugVarDump($value);
            }
        } else {
            $DebugOutput[] = 'ApacheLookupURIarray() -- FAILED';
        }
        $DebugOutput[] = '';

        if (isset($_GET) && is_array($_GET)) {
            foreach ($_GET as $key => $value) {
                $DebugOutput[] = '$_GET[' . $key . ']' . str_repeat(' ', 30 - strlen($key)) . '= ' . $this->phpThumbDebugVarDump($value);
            }
        }
        if (isset($_POST) && is_array($_POST)) {
            foreach ($_POST as $key => $value) {
                $DebugOutput[] = '$_POST[' . $key . ']' . str_repeat(' ', 29 - strlen($key)) . '= ' . $this->phpThumbDebugVarDump($value);
            }
        }
        $DebugOutput[] = '';

        $DebugOutput[] = '$this->debugmessages:';
        foreach ($this->debugmessages as $errorstring) {
            $DebugOutput[] = '  * ' . $errorstring;
        }
        $DebugOutput[] = '';

        $DebugOutput[] = '$this->debugtiming:';
        foreach ($this->debugtiming as $timestamp => $timingstring) {
            $DebugOutput[] = '  * ' . $timestamp . ' ' . $timingstring;
        }
        $DebugOutput[] = '  * Total processing time: ' . number_format(max(array_keys($this->debugtiming)) - min(array_keys($this->debugtiming)), 6);

        $this->f = (isset($_GET['f']) ? $_GET['f'] : $this->f); // debug modes 0-2 don't recognize text mode otherwise
        return $this->ErrorImage(implode("\n", $DebugOutput), 700, 500, true);
    }

    function FatalError($text) {
        if (is_null($this->fatalerror)) {
            $this->fatalerror = $text;
        }
        return true;
    }

    function ErrorImage($text, $width=0, $height=0, $forcedisplay=false) {
        $width = ($width ? $width : $this->config_error_image_width);
        $height = ($height ? $height : $this->config_error_image_height);

        $text = ($this->config_disable_debug ? '' : $text);

        $this->FatalError($text);
        $this->DebugMessage($text, __FILE__, __LINE__);
        $this->purgeTempFiles();
        if ($this->phpThumbDebug && !$forcedisplay) {
            return false;
        }
        if (!$this->config_error_die_on_error && !$forcedisplay) {
            return false;
        }
        if ($this->config_error_silent_die_on_error) {
            exit;
        }
        if ($this->err || $this->config_error_message_image_default) {
            // Show generic custom error image instead of error message
            // for use on production sites where you don't want debug messages
            if (($this->err == 'showerror') || $this->phpThumbDebug) {
                // fall through and actually show error message even if default error image is set
            } else {
                header('Location: ' . ($this->err ? $this->err : $this->config_error_message_image_default));
                exit;
            }
        }
        $this->setOutputFormat();
        if (!$this->thumbnailFormat || (phpthumb_functions::gd_version() < 1)) {
            $this->thumbnailFormat = 'text';
        }
        if (@$this->thumbnailFormat == 'text') {
            // bypass all GD functions and output text error message
            if (!headers_sent()) {
                header('Content-type: text/plain');
                echo $text;
            } else {
                echo '<pre>' . htmlspecialchars($text) . '</pre>';
            }
            exit;
        }

        $FontWidth = ImageFontWidth($this->config_error_fontsize);
        $FontHeight = ImageFontHeight($this->config_error_fontsize);

        $LinesOfText = explode("\n", @wordwrap($text, floor($width / $FontWidth), "\n", true));
        $height = max($height, count($LinesOfText) * $FontHeight);

        $headers_file = '';
        $headers_line = '';
        if (phpthumb_functions::version_compare_replacement(phpversion(), '4.3.0', '>=') && headers_sent($headers_file, $headers_line)) {

            echo "\n" . '**Headers already sent in file "' . $headers_file . '" on line "' . $headers_line . '", dumping error message as text:**<br><pre>' . "\n\n" . $text . "\n" . '</pre>';
        } elseif (headers_sent()) {

            echo "\n" . '**Headers already sent, dumping error message as text:**<br><pre>' . "\n\n" . $text . "\n" . '</pre>';
        } elseif ($gdimg_error = ImageCreate($width, $height)) {

            $background_color = phpthumb_functions::ImageHexColorAllocate($gdimg_error, $this->config_error_bgcolor, true);
            $text_color = phpthumb_functions::ImageHexColorAllocate($gdimg_error, $this->config_error_textcolor, true);
            ImageFilledRectangle($gdimg_error, 0, 0, $width, $height, $background_color);
            $lineYoffset = 0;
            foreach ($LinesOfText as $line) {
                ImageString($gdimg_error, $this->config_error_fontsize, 2, $lineYoffset, $line, $text_color);
                $lineYoffset += $FontHeight;
            }
            if (function_exists('ImageTypes')) {
                $imagetypes = ImageTypes();
                if ($imagetypes & IMG_PNG) {
                    header('Content-Type: image/png');
                    ImagePNG($gdimg_error);
                } elseif ($imagetypes & IMG_GIF) {
                    header('Content-Type: image/gif');
                    ImageGIF($gdimg_error);
                } elseif ($imagetypes & IMG_JPG) {
                    header('Content-Type: image/jpeg');
                    ImageJPEG($gdimg_error);
                } elseif ($imagetypes & IMG_WBMP) {
                    header('Content-Type: image/vnd.wap.wbmp');
                    ImageWBMP($gdimg_error);
                }
            }
            ImageDestroy($gdimg_error);
        }
        if (!headers_sent()) {
            echo "\n" . '**Failed to send graphical error image, dumping error message as text:**<br>' . "\n\n" . $text;
        }
        exit;
        return true;
    }

    function ImageCreateFromStringReplacement(&$RawImageData, $DieOnErrors=false) {
        // there are serious bugs in the non-bundled versions of GD which may cause
        // PHP to segfault when calling ImageCreateFromString() - avoid if at all possible
        // when not using a bundled version of GD2
        if (!phpthumb_functions::gd_version()) {
            if ($DieOnErrors) {
                if (!headers_sent()) {
                    // base64-encoded error image in GIF format
                    $ERROR_NOGD = 'R0lGODlhIAAgALMAAAAAABQUFCQkJDY2NkZGRldXV2ZmZnJycoaGhpSUlKWlpbe3t8XFxdXV1eTk5P7+/iwAAAAAIAAgAAAE/vDJSau9WILtTAACUinDNijZtAHfCojS4W5H+qxD8xibIDE9h0OwWaRWDIljJSkUJYsN4bihMB8th3IToAKs1VtYM75cyV8sZ8vygtOE5yMKmGbO4jRdICQCjHdlZzwzNW4qZSQmKDaNjhUMBX4BBAlmMywFSRWEmAI6b5gAlhNxokGhooAIK5o/pi9vEw4Lfj4OLTAUpj6IabMtCwlSFw0DCKBoFqwAB04AjI54PyZ+yY3TD0ss2YcVmN/gvpcu4TOyFivWqYJlbAHPpOntvxNAACcmGHjZzAZqzSzcq5fNjxFmAFw9iFRunD1epU6tsIPmFCAJnWYE0FURk7wJDA0MTKpEzoWAAskiAAA7';
                    header('Content-Type: image/gif');
                    echo base64_decode($ERROR_NOGD);
                } else {
                    echo '*** ERROR: No PHP-GD support available ***';
                }
                exit;
            } else {
                $this->DebugMessage('ImageCreateFromStringReplacement() failed: gd_version says "' . phpthumb_functions::gd_version() . '"', __FILE__, __LINE__);
                return false;
            }
        }
        if (phpthumb_functions::gd_is_bundled()) {
            $this->DebugMessage('ImageCreateFromStringReplacement() calling built-in ImageCreateFromString()', __FILE__, __LINE__);
            return @ImageCreateFromString($RawImageData);
        }
        if ($this->issafemode) {
            $this->DebugMessage('ImageCreateFromStringReplacement() failed: cannot create temp file in SAFE_MODE', __FILE__, __LINE__);
            return false;
        }

        switch (substr($RawImageData, 0, 3)) {
            case 'GIF':
                $ICFSreplacementFunctionName = 'ImageCreateFromGIF';
                break;
            case "\xFF\xD8\xFF":
                $ICFSreplacementFunctionName = 'ImageCreateFromJPEG';
                break;
            case "\x89" . 'PN':
                $ICFSreplacementFunctionName = 'ImageCreateFromPNG';
                break;
            default:
                $this->DebugMessage('ImageCreateFromStringReplacement() failed: unknown fileformat signature "' . phpthumb_functions::HexCharDisplay(substr($RawImageData, 0, 3)) . '"', __FILE__, __LINE__);
                return false;
                break;
        }
        if ($tempnam = $this->phpThumb_tempnam()) {
            if ($fp_tempnam = @fopen($tempnam, 'wb')) {
                fwrite($fp_tempnam, $RawImageData);
                fclose($fp_tempnam);
                if (($ICFSreplacementFunctionName == 'ImageCreateFromGIF') && !function_exists($ICFSreplacementFunctionName)) {

                    // Need to create from GIF file, but ImageCreateFromGIF does not exist
                    ob_start();
                    if (!@include_once(dirname(__FILE__) . '/phpthumb.gif.php')) {
                        $ErrorMessage = 'Failed to include required file "' . dirname(__FILE__) . '/phpthumb.gif.php" in ' . __FILE__ . ' on line ' . __LINE__;
                        $this->DebugMessage($ErrorMessage, __FILE__, __LINE__);
                    }
                    ob_end_clean();
                    // gif_loadFileToGDimageResource() cannot read from raw data, write to file first
                    if ($tempfilename = $this->phpThumb_tempnam()) {
                        if ($fp_tempfile = @fopen($tempfilename, 'wb')) {
                            fwrite($fp_tempfile, $RawImageData);
                            fclose($fp_tempfile);
                            $gdimg_source = gif_loadFileToGDimageResource($tempfilename);
                            $this->DebugMessage('gif_loadFileToGDimageResource(' . $tempfilename . ') completed', __FILE__, __LINE__);
                            $this->DebugMessage('deleting "' . $tempfilename . '"', __FILE__, __LINE__);
                            unlink($tempfilename);
                            return $gdimg_source;
                            break;
                        } else {
                            $ErrorMessage = 'Failed to open tempfile in ' . __FILE__ . ' on line ' . __LINE__;
                            $this->DebugMessage($ErrorMessage, __FILE__, __LINE__);
                        }
                    } else {
                        $ErrorMessage = 'Failed to open generate tempfile name in ' . __FILE__ . ' on line ' . __LINE__;
                        $this->DebugMessage($ErrorMessage, __FILE__, __LINE__);
                    }
                } elseif (function_exists($ICFSreplacementFunctionName) && ($gdimg_source = @$ICFSreplacementFunctionName($tempnam))) {

                    // great
                    $this->DebugMessage($ICFSreplacementFunctionName . '(' . $tempnam . ') succeeded', __FILE__, __LINE__);
                    $this->DebugMessage('deleting "' . $tempnam . '"', __FILE__, __LINE__);
                    unlink($tempnam);
                    return $gdimg_source;
                } else {

                    // GD functions not available, or failed to create image
                    $this->DebugMessage($ICFSreplacementFunctionName . '(' . $tempnam . ') ' . (function_exists($ICFSreplacementFunctionName) ? 'failed' : 'does not exist'), __FILE__, __LINE__);
                    if (isset($_GET['phpThumbDebug'])) {
                        $this->phpThumbDebug();
                    }
                }
            } else {
                $ErrorMessage = 'Failed to fopen(' . $tempnam . ', "wb") in ' . __FILE__ . ' on line ' . __LINE__ . "\n" . 'You may need to set $PHPTHUMB_CONFIG[temp_directory] in phpThumb.config.php';
                if ($this->issafemode) {
                    $ErrorMessage = 'ImageCreateFromStringReplacement() failed in ' . __FILE__ . ' on line ' . __LINE__ . ': cannot create temp file in SAFE_MODE';
                }
                $this->DebugMessage($ErrorMessage, __FILE__, __LINE__);
            }
            $this->DebugMessage('deleting "' . $tempnam . '"', __FILE__, __LINE__);
            @unlink($tempnam);
        } else {
            $ErrorMessage = 'Failed to generate phpThumb_tempnam() in ' . __FILE__ . ' on line ' . __LINE__ . "\n" . 'You may need to set $PHPTHUMB_CONFIG[temp_directory] in phpThumb.config.php';
            if ($this->issafemode) {
                $ErrorMessage = 'ImageCreateFromStringReplacement() failed in ' . __FILE__ . ' on line ' . __LINE__ . ': cannot create temp file in SAFE_MODE';
            }
        }
        if ($DieOnErrors && $ErrorMessage) {
            return $this->ErrorImage($ErrorMessage);
        }
        return false;
    }

    function ImageResizeFunction(&$dst_im, &$src_im, $dstX, $dstY, $srcX, $srcY, $dstW, $dstH, $srcW, $srcH) {
        $this->DebugMessage('ImageResizeFunction($o, $s, ' . $dstX . ', ' . $dstY . ', ' . $srcX . ', ' . $srcY . ', ' . $dstW . ', ' . $dstH . ', ' . $srcW . ', ' . $srcH . ')', __FILE__, __LINE__);
        if (($dstW == $srcW) && ($dstH == $srcH)) {
            return ImageCopy($dst_im, $src_im, $dstX, $dstY, $srcX, $srcY, $srcW, $srcH);
        }
        if (phpthumb_functions::gd_version() >= 2.0) {
            if ($this->config_disable_imagecopyresampled) {
                return phpthumb_functions::ImageCopyResampleBicubic($dst_im, $src_im, $dstX, $dstY, $srcX, $srcY, $dstW, $dstH, $srcW, $srcH);
            }
            return ImageCopyResampled($dst_im, $src_im, $dstX, $dstY, $srcX, $srcY, $dstW, $dstH, $srcW, $srcH);
        }
        return ImageCopyResized($dst_im, $src_im, $dstX, $dstY, $srcX, $srcY, $dstW, $dstH, $srcW, $srcH);
    }

    function InitializeTempDirSetting() {
        $this->config_temp_directory = realpath($this->config_temp_directory ? $this->config_temp_directory : (getenv('TMPDIR') ? getenv('TMPDIR') : getenv('TMP')));
        return true;
    }

    function phpThumb_tempnam() {
        $this->InitializeTempDirSetting();
        $tempnam = realpath(tempnam($this->config_temp_directory, 'pThumb'));
        $this->tempFilesToDelete[$tempnam] = $tempnam;
        $this->DebugMessage('phpThumb_tempnam() returning "' . $tempnam . '"', __FILE__, __LINE__);
        return $tempnam;
    }

    function DebugMessage($message, $file='', $line='') {
        $this->debugmessages[] = $message . ($file ? ' in file "' . (basename($file) ? basename($file) : $file) . '"' : '') . ($line ? ' on line ' . $line : '');
        return true;
    }

    function DebugTimingMessage($message, $file='', $line='', $timestamp=0) {
        if (!$timestamp) {
            $timestamp = array_sum(explode(' ', microtime()));
        }
        $this->debugtiming[number_format($timestamp, 6, '.', '')] = ': ' . $message . ($file ? ' in file "' . (basename($file) ? basename($file) : $file) . '"' : '') . ($line ? ' on line ' . $line : '');
        return true;
    }

}

?>